{"$schema": "https://c3voc.de/schedule/schema.json", "generator": {"name": "pretalx", "version": "2026.1.0"}, "schedule": {"url": "https://pretalx.linuxdays.cz/linuxdays-2025/schedule/", "version": "0.9", "base_url": "https://pretalx.linuxdays.cz", "conference": {"acronym": "linuxdays-2025", "title": "LinuxDays 2025", "start": "2025-10-04", "end": "2025-10-05", "daysCount": 2, "timeslot_duration": "00:05", "time_zone_name": "Europe/Prague", "colors": {"primary": "#d79227"}, "rooms": [{"name": "105", "slug": "22-105", "guid": "9bfc751d-a068-5aab-b1c4-4d2b598b7447", "description": null, "capacity": 300}, {"name": "155", "slug": "23-155", "guid": "7c393b8e-259f-5282-a56a-262b14a006a1", "description": null, "capacity": 200}, {"name": "107", "slug": "24-107", "guid": "daaf4ffd-99da-548b-bce1-f9f9dacf568b", "description": null, "capacity": 107}, {"name": "111", "slug": "25-111", "guid": "71f28293-43e4-50c8-b348-a6874523e965", "description": null, "capacity": 100}, {"name": "345", "slug": "26-345", "guid": "bba7f331-66bc-5f42-9b20-16a1da696b90", "description": null, "capacity": 24}], "tracks": [{"name": "CZ.NIC", "slug": "5-cznic", "color": "#194796"}, {"name": "Content in English", "slug": "6-content-in-english", "color": "#D01100"}, {"name": "Workshops", "slug": "7-workshops", "color": "#0CA7A7"}], "days": [{"index": 1, "date": "2025-10-04", "day_start": "2025-10-04T04:00:00+02:00", "day_end": "2025-10-05T03:59:00+02:00", "rooms": {"105": [{"guid": "f67038f2-31a0-5e92-8b58-118ff2c41cdb", "code": "T3CAXV", "id": 476, "logo": null, "date": "2025-10-04T09:50:00+02:00", "start": "09:50", "duration": "00:10", "room": "105", "slug": "linuxdays-2025-476-zahajeni-konference", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/T3CAXV/", "title": "Zah\u00e1jen\u00ed konference", "subtitle": "", "track": null, "type": "Lightning Talk", "language": "cs", "abstract": "", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "R98MAX", "name": "Petr \"Hody\" Hoda\u010d", "avatar": null, "biography": null, "public_name": "Petr \"Hody\" Hoda\u010d", "guid": "6a5cccbf-7e62-5dcc-8cd6-9349cd0e8e88", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/R98MAX/"}], "links": [], "feedback_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/T3CAXV/feedback/", "origin_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/T3CAXV/", "attachments": []}, {"guid": "b860f237-9b98-5c41-8716-4dc3bf3358e4", "code": "RTM9WF", "id": 413, "logo": null, "date": "2025-10-04T10:00:00+02:00", "start": "10:00", "duration": "00:50", "room": "105", "slug": "linuxdays-2025-413-co-dela-linux-s-moji-ramkou", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/RTM9WF/", "title": "Co d\u011bl\u00e1 Linux s moj\u00ed RAMkou?", "subtitle": "", "track": null, "type": "Talk", "language": "cs", "abstract": "Zaj\u00edmalo v\u00e1s n\u011bkdy, kde p\u0159esn\u011b je pou\u017eita va\u0161e RAM v Linuxu, a jak to m\u016f\u017eete zjistit?\r\n\r\nKolik pam\u011bti z\u00edsk\u00e1m, kdy\u017e ukon\u010d\u00edm konkr\u00e9tn\u00ed proces? Co vlastn\u011b znamen\u00e1 sloupek RES v p\u0159\u00edkazu \"top\", a pro\u010d m\u016f\u017ee sou\u010det p\u0159es v\u0161echny procesy b\u00fdt v\u00fdrazn\u011b vy\u0161\u0161\u00ed, ne\u017e kolik mi p\u0159\u00edkaz \"free\" tvrd\u00ed, \u017ee je obsazeno? Nebo naopak v\u00fdrazn\u011b ni\u017e\u0161\u00ed?\r\n\r\nPro\u010d jsou ve v\u00fdpisu /proc/meminfo rozd\u00edly mezi \u0159\u00e1dkem AnonPages a sou\u010dtem \u0159\u00e1dk\u016f Active(anon)  a Inactive(anon)? Kter\u00e9 \u0159\u00e1dky bych m\u011bl vlastn\u011b se\u010d\u00edst, abych vy\u0161lo tot\u00e9\u017e, co je na \u0159\u00e1dku MemTotal? A kdy\u017e vyjde m\u00e9n\u011b, jak zjist\u00edm, kde se zbytek pam\u011bti ztratil? Co vlastn\u011b \u0159\u00edk\u00e1 \u0159\u00e1dek MemAvailable? Pro\u010d je n\u011bkdy obsazen swap, kdy\u017e se zd\u00e1, \u017ee voln\u00e9 pam\u011bti je dost?\r\n\r\nV t\u00e9to p\u0159edn\u00e1\u0161ce se dozv\u00edte odpov\u011bdi na tyto a podobn\u00e9 dotazy, a tak\u00e9 vysv\u011btlen\u00ed, pro\u010d z\u00edsk\u00e1n\u00ed odpov\u011bd\u00ed \u010dasto nen\u00ed trivi\u00e1ln\u00ed z\u00e1le\u017eitost.", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "8TSRPD", "name": "Vlastimil Babka", "avatar": "https://pretalx.linuxdays.cz/media/avatars/Babka_Vlastimil_AnR6G1q.jpg", "biography": "V\u00fdvoj\u00e1\u0159 linuxov\u00e9ho kernelu v SUSE Labs. Maintainer slab a page alok\u00e1tor\u016f v mainline kernelu.", "public_name": "Vlastimil Babka", "guid": "4ab9a690-72a6-570b-8047-c3d0fcc6b034", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/8TSRPD/"}], "links": [], "feedback_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/RTM9WF/feedback/", "origin_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/RTM9WF/", "attachments": [{"title": "slajdy", "url": "/media/linuxdays-2025/submissions/RTM9WF/resources/slides-expanded_cSP12y3.pdf", "type": "related"}]}, {"guid": "dabd645b-51e0-5ce4-a1dc-b2f4c17b1399", "code": "7XKBLG", "id": 421, "logo": null, "date": "2025-10-04T11:00:00+02:00", "start": "11:00", "duration": "00:50", "room": "105", "slug": "linuxdays-2025-421-jak-ne-vzdelavat-v-kyberbezpecnosti-zkusenosti-z-praxe", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/7XKBLG/", "title": "Jak (ne)vzd\u011bl\u00e1vat v kyberbezpe\u010dnosti: zku\u0161enosti z praxe", "subtitle": "", "track": null, "type": "Talk", "language": "cs", "abstract": "Vzd\u011bl\u00e1v\u00e1n\u00ed v kyberbezpe\u010dnosti se top\u00ed v buzzwordech, 127 str\u00e1nkov\u00e9m PowerPointu a polofunk\u010dn\u00edch kurzech, co recyklujou 10 let star\u00fd \u00fatoky. Ale sv\u011bt se d\u00e1vno zm\u011bnil. Firemn\u00ed firewally fajrujou front\u00e1ln\u011b fejkov\u00fdmi floody, nicm\u00e9n\u011b Franta, kterej m\u00e1 na starost ty po\u010d\u00edta\u010de, v kl\u00eddku m\u011bn\u00ed tonery a netu\u0161\u00ed, co to je C2 a pan\u00ed Ag\u00e1ta pr\u00e1v\u011b pos\u00edl\u00e1 u\u017e druhou platbu z firemn\u00edho \u00fa\u010dtu Dubajsk\u00e9mu doktorovi.\r\n\r\nV t\u00e9hle p\u0159edn\u00e1\u0161ce se mrkneme, jak vypad\u00e1 realita vzd\u011bl\u00e1v\u00e1n\u00ed kyberbezpe\u010dnosti v \u010desk\u00fdch firm\u00e1ch. Uk\u00e1\u017eu v\u00e1m, co fungovalo v labu, co selhalo v re\u00e1lu, a pro\u010d n\u011bkdy v\u00edc nau\u010d\u00ed debugov\u00e1n\u00ed p\u0159i capture the flag ne\u017e t\u0159i semestry teorie s\u00edt\u00ed.\r\nVezmu v\u00e1s do z\u00e1kulis\u00ed \u0161kolen\u00ed, kter\u00fd lidi fakt bav\u00ed. \u017d\u00e1dn\u00fd klikac\u00ed prezentace, ale p\u0159\u00edstup, kterej se mi p\u0159i pro\u0161kolen\u00ed v\u00edce ne\u017e 15 000 lid\u00ed osv\u011bd\u010dil. Pokud v\u00e1s u\u017e nebav\u00ed sledovat, jak se kyberbezpe\u010dnost u\u010d\u00ed jako Excel nebo d\u011bjepis, stavte se.", "description": "Pro koho to je?\r\n\r\nPro ka\u017ed\u00e9ho, kdo u\u010d\u00ed nebo chce u\u010dit kyberbezpe\u010dnost bez bullshit\u016f.\r\nPro ajt\u00edky, co cht\u011bj\u00ed (nebo mus\u00ed) p\u0159ed\u00e1vat svoje skills norm\u00e1ln\u00edm lidem.\r\nPro u\u010ditele, co c\u00edt\u00ed, \u017ee PowerPoint na chytr\u00fd tabuly nen\u00ed ide\u00e1ln\u00ed \u0159e\u0161en\u00ed.\r\nPro studenty, co cht\u011bj\u00ed v\u00edc, ne\u017e jen vyklikat test s checkboxama.\r\nPro ty, co v\u011bd\u00ed, \u017ee nejlep\u0161\u00ed zp\u016fsob u\u010den\u00ed je rozebrat v\u011bci na \u0161roubky - a slo\u017eit je zp\u00e1tky\u2026 blb\u011b. A pak to ud\u011blat znova a spr\u00e1vn\u011b.", "recording_license": "", "do_not_record": false, "persons": [{"code": "C8SL3B", "name": "Spajk", "avatar": "https://pretalx.linuxdays.cz/media/avatars/C8SL3B_nnNpHYV.png", "biography": "Pavel Mat\u011bj\u00ed\u010dek, zn\u00e1m\u00fd tak\u00e9 jako Spajk, je lektor, etick\u00fd hacker a konzultant v oblasti kybernetick\u00e9 bezpe\u010dnosti. \r\n\r\nR\u00e1d \u0161kol\u00ed a prezentuje, je aktivn\u00ed na soci\u00e1ln\u00edch s\u00edt\u00edch, p\u00ed\u0161e blog Spajk.cz a \u010dasto je hostem v m\u00e9di\u00edch nebo na odborn\u00fdch konferenc\u00edch. Jeho osobn\u00edm c\u00edlem je \u0161\u00ed\u0159it osv\u011btu v oblasti IT bezpe\u010dnosti a ochrany digit\u00e1ln\u00edho soukrom\u00ed mezi b\u011b\u017en\u00e9 u\u017eivatele \u2013 je populariz\u00e1torem t\u00e9to t\u00e9matiky, n\u011bkdy je t\u00e9\u017e ozna\u010dov\u00e1n jako evangelista IT bezpe\u010dnosti. V d\u011btstv\u00ed ho m\u00e1lem udupal slon.\r\n\r\nT\u00e9m\u011b\u0159 10 let pracoval v antivirov\u00e9 spole\u010dnosti ESET, kde vedl t\u00fdm technick\u00e9 podpory a zast\u00e1val funkci bezpe\u010dnostn\u00edho experta. Pot\u00e9 p\u016fsobil jako freelancer, na\u010de\u017e zalo\u017eil vlastn\u00ed spole\u010dnost BOIT Cyber Security, kter\u00e1 se zab\u00fdv\u00e1 penetra\u010dn\u00edmi testy, soci\u00e1ln\u00edm in\u017een\u00fdrstv\u00edm a vzd\u011bl\u00e1v\u00e1n\u00edm v IT bezpe\u010dnosti.", "public_name": "Spajk", "guid": "9914af53-b0fd-5651-8c2c-3a16e7359392", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/C8SL3B/"}], "links": [], "feedback_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/7XKBLG/feedback/", "origin_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/7XKBLG/", "attachments": [{"title": "Prezentace ke sta\u017een\u00ed", "url": "/media/linuxdays-2025/submissions/7XKBLG/resources/LinuxDays_2025_prezk_TD1C65G.pdf", "type": "related"}]}, {"guid": "e9b5f818-746c-5860-aa6e-327ab4383b4c", "code": "QFAZMB", "id": 453, "logo": null, "date": "2025-10-04T13:00:00+02:00", "start": "13:00", "duration": "00:50", "room": "105", "slug": "linuxdays-2025-453-cesta-k-selfhostingu", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/QFAZMB/", "title": "Cesta k selfhostingu", "subtitle": "", "track": null, "type": "Talk", "language": "cs", "abstract": "Jak jsem se (t\u00e9m\u011b\u0159) zbavil z\u00e1vislosti na softwarov\u00fdch korpor\u00e1tech a \u010d\u00edm jsem je nahradil.", "description": "Otev\u0159en\u00fdch aplikac\u00ed je spousta, ale ne v\u0161echno spolehliv\u011b funguje, pohodln\u011b se provozuje a je dostate\u010dn\u011b srozumiteln\u00e9 pro ostatn\u00ed rodinn\u00e9 p\u0159\u00edslu\u0161n\u00edky.\r\nV p\u0159edn\u00e1\u0161ce bych pro\u0161el svou cestu odch\u00e1zen\u00ed z b\u011b\u017en\u00fdch slu\u017eeb (Gmail, Google Calendar, Google Tasks, Google Photos, Adobe Premiere, Adobe Photoshop, Google Home Assistant, Facebook Massenger/Whatsapp, Twitter, Spotify Podcasts...) a popsal, co mi funguje m\u00edsto nich, a naopak co mi v rodin\u011b nepro\u0161lo.", "recording_license": "", "do_not_record": false, "persons": [{"code": "UGEKT7", "name": "\u0160t\u011bp\u00e1n \u0160korpil", "avatar": "https://pretalx.linuxdays.cz/media/avatars/UGEKT7_xlSIB0v.png", "biography": "Jsem nad\u0161enec do otev\u0159en\u00fdch technologi\u00ed, 3d tisku, otev\u0159en\u00fdch map a do m\u011bstsk\u00e9 cyklistiky. \u017div\u00edm se jako softwarov\u00fd in\u017een\u00fdr v \u017ei\u017ekovsk\u00e9 firm\u011b Media Factory, kde stav\u00edme z otev\u0159en\u00fdch technologi\u00ed webov\u00e9 aplikace na m\u00edru z\u00e1kazn\u00edk\u016fm.", "public_name": "\u0160t\u011bp\u00e1n \u0160korpil", "guid": "f83d81fe-1106-58b3-970b-400091fb42cf", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/UGEKT7/"}], "links": [], "feedback_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/QFAZMB/feedback/", "origin_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/QFAZMB/", "attachments": [{"title": "PDF slides", "url": "/media/linuxdays-2025/submissions/QFAZMB/resources/linuxdays2025-stepan_QV7fEue.pdf", "type": "related"}]}, {"guid": "df3ac42c-823d-5c02-852f-98727765c4fa", "code": "TUZ3BH", "id": 395, "logo": null, "date": "2025-10-04T14:00:00+02:00", "start": "14:00", "duration": "00:50", "room": "105", "slug": "linuxdays-2025-395-chyt-me-kdyz-to-dokazes-bezpecnostni-monitoring-s-foss", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/TUZ3BH/", "title": "Chy\u0165 m\u011b, kdy\u017e to dok\u00e1\u017ee\u0161! Bezpe\u010dnostn\u00ed monitoring s FOSS", "subtitle": "", "track": null, "type": "Talk", "language": "cs", "abstract": "Dne\u0161n\u00ed firemn\u00ed s\u00edt\u011b jsou extr\u00e9mn\u011b heterogenn\u00ed. R\u016fzn\u00e9 opera\u010dn\u00ed syst\u00e9my, r\u016fzn\u00e9 platformy a k tomu mix self-hosted a SaaS slu\u017eeb. Po\u017eadavky na zabezpe\u010den\u00ed jsou \u010d\u00edm d\u00e1l vy\u0161\u0161\u00ed, \u00fatoky \u010dast\u011bj\u0161\u00ed i sofistikovan\u011bj\u0161\u00ed.\r\n\r\nPoj\u010fme si uk\u00e1zat, jak lze bezpe\u010dnostn\u00ed monitoring takov\u00e9ho prost\u0159ed\u00ed postavit na FOSS n\u00e1stroj\u00edch. Jak vyu\u017e\u00edt Suricatu, Zeek, Osquery, Kunai, Sysmon, Graylog, aj. a spojit je do jednoho celku? Jak detekovat incident? A jak na detekci nav\u00e1zat automatickou remediaci Velociraptorem?", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "VAZJVB", "name": "Petr Medonos", "avatar": "https://pretalx.linuxdays.cz/media/avatars/VAZJVB_NFrXnxR.jpeg", "biography": "Security Engineer @ Etnetera Core, Loving husband, (double) father", "public_name": "Petr Medonos", "guid": "7b01a800-041a-5c56-8ba3-7cf7a5fb720c", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/VAZJVB/"}], "links": [], "feedback_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/TUZ3BH/feedback/", "origin_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/TUZ3BH/", "attachments": [{"title": "Slidy", "url": "/media/linuxdays-2025/submissions/TUZ3BH/resources/Bezpecnostni_monitor_JD0imPe.pdf", "type": "related"}]}, {"guid": "603a3345-7f7b-51cb-b0ba-9e5475ca20be", "code": "REZFEN", "id": 458, "logo": null, "date": "2025-10-04T15:00:00+02:00", "start": "15:00", "duration": "00:50", "room": "105", "slug": "linuxdays-2025-458-hacking-linux-namespaces", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/REZFEN/", "title": "Hacking Linux Namespaces", "subtitle": "", "track": null, "type": "Talk", "language": "cs", "abstract": "Kontejnery se staly univerz\u00e1ln\u00edm n\u00e1strojem nap\u0159\u00ed\u010d IT pr\u016fmyslem. V\u011bt\u0161ina z n\u00e1s s nimi p\u0159i\u0161la do kontaktu - a\u0165 u\u017e z pohledu v\u00fdvoje, nasazen\u00ed nebo administrace.  Docker, Podman, Kubernetes, LXC... co stoj\u00ed na pozad\u00ed t\u011bchto zn\u00e1m\u00fdch technologi\u00ed? V t\u00e9to p\u0159edn\u00e1\u0161ce nahl\u00e9dnete pod pokli\u010dku kontejneriza\u010dn\u00edho softwaru a dozv\u00edte se v\u00edce o Linux namespaces - technologii, bez kter\u00e9 by kontejnery pravd\u011bpodobn\u011b nemohly existovat. Co jsou a jak funguj\u00ed Linux namespaces? Jak je m\u016f\u017eu debuggovat? Jak je m\u016f\u017eu vytvo\u0159it a maj\u00ed n\u011bjak\u00e9 vyu\u017eit\u00ed mimo sv\u011bt kontejner\u016f? Na m\u00e9 p\u0159edn\u00e1\u0161ce se  pokus\u00edm tyto ot\u00e1zky zodpov\u011bd\u011bt pomoc\u00ed praktick\u00fdch uk\u00e1zek v Linux shell prost\u0159ed\u00ed a uk\u00e1zek \"netradi\u010dn\u00edho\" vyu\u017eit\u00ed namespac\u016f.", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "MCLSS9", "name": "\u0160t\u011bp\u00e1n \u0160igut", "avatar": "https://pretalx.linuxdays.cz/media/avatars/MCLSS9_lJbHo8D.png", "biography": "Programov\u00e1n\u00ed m\u011b prov\u00e1z\u00ed tak\u0159ka cel\u00fd \u017eivot. Od prvn\u00edch pokus\u016f s hackov\u00e1n\u00edm JASM ve Warcraft 3 custom map\u00e1ch p\u0159es prvn\u00ed komer\u010dn\u00ed zku\u0161enost v Red Hatu a\u017e po mou sou\u010dasnou roli CTO v telekomunika\u010dn\u00ed spole\u010dnosti PODA. Za tu dobu se leccos zm\u011bnilo - pou\u017e\u00edvan\u00e9 technologie, hardware, na kter\u00e9m p\u00ed\u0161u tento text, kids_cnt += 2 a s t\u00edm spojen\u00e9 mno\u017estv\u00ed \u010dasu, kter\u00fd m\u016f\u017eu v\u011bnovat dom\u00e1c\u00edmu hackov\u00e1n\u00ed... Ale jedna v\u011bc z\u016fst\u00e1v\u00e1 st\u00e1le stejn\u00e1 - nikdy nepohrdnu mo\u017enost\u00ed do hloubky se pono\u0159it do nezn\u00e1m\u00e9 problematiky a nau\u010dit se zase dal\u0161\u00ed st\u0159\u00edpek o tom, jak funguje software a hardware kolem n\u00e1s.\r\n\r\nJsem velk\u00fdm zast\u00e1ncem Open-source (hardware i software), hnut\u00ed Free software a Right to repair a to jak z praktick\u00e9ho, tak ideologick\u00e9ho hlediska. V\u011b\u0159\u00edm, \u017ee \u010dlov\u011bk by p\u0159i v\u00fdb\u011bru sv\u00e9ho hardwaru a softwaru - stejn\u011b jako u demokratick\u00fdch voleb - m\u011bl m\u00edt mo\u017enost zvolit svobodu.\r\n\r\nV\u011bci o kter\u00fdch se r\u00e1d pobav\u00edm:\r\n- Go, Python\r\n- Networking\r\n- Linux, Kubernetes\r\n- Spoustu dal\u0161\u00edch open-source technologi\u00ed... :-)\r\n- V\u00fdroba polovodi\u010d\u016f\r\n- B\u011bh\u00e1n\u00ed", "public_name": "\u0160t\u011bp\u00e1n \u0160igut", "guid": "29ea6c4d-3f19-5abe-8d00-5a860cbc6298", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/MCLSS9/"}], "links": [], "feedback_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/REZFEN/feedback/", "origin_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/REZFEN/", "attachments": [{"title": "Prezentace v PDF", "url": "/media/linuxdays-2025/submissions/REZFEN/resources/Hacking_Linux_Namesp_r1Irx6U.pdf", "type": "related"}]}, {"guid": "5140ea30-83e4-5e10-bc5b-6566b84ac490", "code": "RFQCKL", "id": 469, "logo": null, "date": "2025-10-04T16:00:00+02:00", "start": "16:00", "duration": "00:50", "room": "105", "slug": "linuxdays-2025-469-backdoor-botnet-a-ina-linuxova-zloba", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/RFQCKL/", "title": "Backdoor, botnet a in\u00e1 Linuxov\u00e1 zloba", "subtitle": "", "track": null, "type": "Talk", "language": "sk", "abstract": "Malv\u00e9r pre Linux nie je m\u00fdtus, skuto\u010dne existuje. Za takmer 30 rokov sme sa mohli stretn\u00fa\u0165 s viacer\u00fdmi malv\u00e9rmi ur\u010den\u00fdmi pre Linux. Backdoory, botnety, ransomv\u00e9ry, coinminery aj \u010fal\u0161ia po\u010d\u00edta\u010dov\u00e1 h\u00e1ve\u010f. Po\u010das predn\u00e1\u0161ky si povieme nie\u010do o evol\u00facii Linuxov\u00e9ho malv\u00e9ru a vybran\u00e9 exempl\u00e1re si predstav\u00edme podrobnej\u0161ie.", "description": "Na predn\u00e1\u0161ke sa pozrieme do d\u00e1vnej hist\u00f3rie po\u010d\u00edta\u010dov\u00fdch v\u00edrusov, aj na aktu\u00e1lne vzorky vyu\u017e\u00edvaj\u00face umel\u00fa inteligenciu. Uk\u00e1\u017eeme si malv\u00e9ry exploituj\u00face zranite\u013enosti, aj malv\u00e9ry, ktor\u00e9 \u00fato\u010dn\u00edci \"nain\u0161talovali\" v neskor\u0161\u00edch f\u00e1zach \u00fatokov. Porozpr\u00e1vame sa o malv\u00e9roch vyu\u017e\u00edvan\u00fdch v cielen\u00fdch kampaniach typu APT, aj o malv\u00e9roch ur\u010den\u00fdch pre dom\u00e1cnosti a mal\u00e9 podniky. Niektor\u00e9 vzorky si aj detailnej\u0161ie zanalyzujeme.", "recording_license": "", "do_not_record": false, "persons": [{"code": "ZDZGPM", "name": "Ladislav Ba\u010do", "avatar": "https://pretalx.linuxdays.cz/media/avatars/laco_WxHHNre.jpg", "biography": "Ladislav Ba\u010do je bezpe\u010dnostn\u00fd konzultant a analytik malv\u00e9ru, s 15 ro\u010dn\u00fdmi sk\u00fasenos\u0165ami v oblastiach po\u010d\u00edta\u010dovej bezpe\u010dnosti, informatiky a vzdel\u00e1vania. Ladislav spolupracoval pri rie\u0161en\u00ed bezpe\u010dnostn\u00fdch incidentov namieren\u00fdch vo\u010di kritickej infra\u0161trukt\u00fare doma aj v zahrani\u010d\u00ed a analyzoval viacero pokro\u010dil\u00fdch kybernetick\u00fdch hrozieb typu APT.\r\n\r\nV s\u00fa\u010dasnosti pracuje vo firme ESET ako analytik sie\u0165ov\u00fdch infiltr\u00e1ci\u00ed. Ladislav taktie\u017e spolupracuje s viacer\u00fdmi slovensk\u00fdmi univerzitami v oblasti kyberbezpe\u010dnosti, participuje na vzdel\u00e1vac\u00edch programoch pre \u0161tudentov a konzultuje bakal\u00e1rske a diplomov\u00e9 pr\u00e1ce.", "public_name": "Ladislav Ba\u010do", "guid": "9701f896-0a2f-592c-95d5-ead6e2318c8b", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/ZDZGPM/"}], "links": [], "feedback_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/RFQCKL/feedback/", "origin_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/RFQCKL/", "attachments": [{"title": "Prezentacia", "url": "/media/linuxdays-2025/submissions/RFQCKL/resources/linuxdays-baco-malve_9K6mJnM.pdf", "type": "related"}]}, {"guid": "accec9ed-56a8-58e0-88f7-c6c527673fec", "code": "XGMYUP", "id": 474, "logo": "https://pretalx.linuxdays.cz/media/linuxdays-2025/submissions/XGMYUP/basnici_MXg0pTL.jpg", "date": "2025-10-04T17:00:00+02:00", "start": "17:00", "duration": "00:50", "room": "105", "slug": "linuxdays-2025-474-jak-basnici-prichazeji-o-iluze-a-lidi-o-ucty", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/XGMYUP/", "title": "Jak b\u00e1sn\u00edci p\u0159ich\u00e1zej\u00ed o iluze a lidi o \u00fa\u010dty", "subtitle": "", "track": null, "type": "Talk", "language": "cs", "abstract": "O b\u00e1sn\u00edc\u00edch toho sice moc nev\u00edm, ale o kraden\u00ed \u00fa\u010dt\u016f n\u011bco bohu\u017eel jo. Jasn\u011b, lidi maj slab\u00fd hesla, `pit0mc!`, ale jak\u00e1 je vlastn\u011b situace v roce 2020n\u011bco, jak se ty p\u0159ihla\u0161ovac\u00ed \u00fadaje kradou, co jsou to infostealery a cloudy a taky co se s t\u00edm d\u00e1 (a m\u00e1) d\u011blat z pohledu provozovatele t\u0159eba n\u011bjak\u00fdho webu. Tohle jsou v\u011bci, kter\u00fd m\u011b docela fascinuj\u00ed (viz [nerd sniping](https://xkcd.com/356/)) a ob\u010das kv\u016fli tomu nejdu sp\u00e1t. Jako t\u0159eba zrovna te\u010f, kdy\u017e p\u0159em\u00fd\u0161l\u00edm o \u010dem v\u0161em mluvit. V roce 2024 jsem na LinuxDays m\u011bl lehce [depkoidn\u00ed p\u0159edn\u00e1\u0161ku](https://www.michalspacek.cz/prednasky/zadni-vratka-pro-zviratka-linuxdays) a tahle teda nebude o moc lep\u0161\u00ed.", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "DDTMQW", "name": "Michal S\u0335\u0312\u0312\u0343\u0310\u035c\u0355\u0359\u0339\u032d\u0323\u0318\u0329\u031e\u0345\u0319\u0321\u0317p\u0336\u035b\u0348\u032b\u0327\u031d\u0327\u0327\u0325\u0332\u035ca\u0335\u031b\u0302\u0308\u0355\u031c\u0355\u0355\u034d\u033c\u033b\u0354\u033b\u0325\u033bc\u0335\u034c\u0301\u0319\u0316\u0318\u0325\u0332\u035c\u0349e\u0338\u033d\u031b\u0301\u0360\u0300\u0310\u0300\u030e\u031b\u034dk\u0335\u030b\u0343\u0314\u0360\u033f\u0313\u0351\u032a\u0327\u033c\u0328\u035a\u034e\u0328", "avatar": "https://pretalx.linuxdays.cz/media/michalspacek-trademark-400x268.jpg", "biography": "My sh!t always works sometimes.", "public_name": "Michal S\u0335\u0312\u0312\u0343\u0310\u035c\u0355\u0359\u0339\u032d\u0323\u0318\u0329\u031e\u0345\u0319\u0321\u0317p\u0336\u035b\u0348\u032b\u0327\u031d\u0327\u0327\u0325\u0332\u035ca\u0335\u031b\u0302\u0308\u0355\u031c\u0355\u0355\u034d\u033c\u033b\u0354\u033b\u0325\u033bc\u0335\u034c\u0301\u0319\u0316\u0318\u0325\u0332\u035c\u0349e\u0338\u033d\u031b\u0301\u0360\u0300\u0310\u0300\u030e\u031b\u034dk\u0335\u030b\u0343\u0314\u0360\u033f\u0313\u0351\u032a\u0327\u033c\u0328\u035a\u034e\u0328", "guid": "9b8348ef-db5e-5879-a969-27a6d26032b5", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/DDTMQW/"}], "links": [], "feedback_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/XGMYUP/feedback/", "origin_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/XGMYUP/", "attachments": []}], "155": [{"guid": "f5b31ca3-404a-5834-911c-47bf3f290f7e", "code": "QFXGE8", "id": 479, "logo": null, "date": "2025-10-04T10:30:00+02:00", "start": "10:30", "duration": "00:20", "room": "155", "slug": "linuxdays-2025-479-turris-neco-se-chysta", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/QFXGE8/", "title": "Turris - n\u011bco se chyst\u00e1!", "subtitle": "", "track": null, "type": "Short Talk", "language": "cs", "abstract": "Routery Turris asi nen\u00ed t\u0159eba p\u0159edstavovat. Mluv\u00edme o nich na t\u00e9to akci\r\nka\u017ed\u00fd rok. Projekt se neust\u00e1lle posouv\u00e1 dop\u0159edu a jednou za \u010das dojde\r\nk v\u011bt\u0161\u00edmu skoku, kter\u00fd projekt m\u016f\u017ee posunout zase n\u011bkam jinam. A tento\r\nskok bychom r\u00e1di uvedli a p\u0159edstavili pr\u00e1v\u011b na LinuxDays 2025.", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "VKNBTZ", "name": "Michal Hru\u0161eck\u00fd", "avatar": "https://pretalx.linuxdays.cz/media/avatars/VKNBTZ_Ln1rvbe.jpg", "biography": "Long time open source fan, free time sysadmin, developer. Long time openSUSE community member, now working full-time on Turris routers.", "public_name": "Michal Hru\u0161eck\u00fd", "guid": "1edee256-6c0e-5e7a-94b8-048105db5b93", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/VKNBTZ/"}], "links": [], "feedback_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/QFXGE8/feedback/", "origin_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/QFXGE8/", "attachments": [{"title": "Slidy", "url": "/media/linuxdays-2025/submissions/QFXGE8/resources/turris_xRBedjn.pdf", "type": "related"}]}, {"guid": "cd2ef5b2-951f-575c-b651-56ed111f3298", "code": "MB88GC", "id": 450, "logo": null, "date": "2025-10-04T11:00:00+02:00", "start": "11:00", "duration": "00:50", "room": "155", "slug": "linuxdays-2025-450-zkratka-alias-funkce-skript-v-shellu", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/MB88GC/", "title": "Zkratka-Alias-Funkce-Skript (v shellu)", "subtitle": "", "track": null, "type": "Talk", "language": "cs", "abstract": "Praktick\u00e1 uk\u00e1zka, jak si zrychlit pr\u00e1ci pomoc\u00ed zkratek, alias\u016f, funkc\u00ed a skript\u016f v shellu (bash). Tentokr\u00e1t vynech\u00e1me teorii ke skriptov\u00e1n\u00ed v shellu a vrhneme se rovnou na psan\u00ed k\u00f3du.\r\n\r\nUk\u00e1\u017eeme si, jak extern\u00edm program\u016fm p\u0159ed\u00e1vat parametry a zpracov\u00e1vat jejich (strukturovan\u00e9) v\u00fdstupy, jak zpracovat vlastn\u00ed p\u0159ep\u00edna\u010de skriptu, jak vytvo\u0159it sd\u00edlenou knihovnu funkc\u00ed nebo vypisovat p\u0159ehledn\u011b na termin\u00e1l informace o \u010dinnosti na\u0161eho skriptu.\r\n\r\nPostupn\u011b vybudujeme z ni\u010deho jednoduchou knihovu skript\u016f, kter\u00e9 n\u00e1m zjednodu\u0161\u00ed a zrychl\u00ed pr\u00e1ci. Konkr\u00e9tn\u011b budou skripty slou\u017eit pro rychl\u00fd st\u0159ih vide\u00ed, ale p\u0159edveden\u00e9 postupy lze vyu\u017e\u00edt obecn\u011b p\u0159i pr\u00e1ci s libovoln\u00fdmi extern\u00edmi programy.", "description": "Materi\u00e1ly k p\u0159edn\u00e1\u0161ce: https://gitlab.com/lukasbarinka/linuxdays-2025", "recording_license": "", "do_not_record": false, "persons": [{"code": "GTABBG", "name": "Luk\u00e1\u0161 Ba\u0159inka", "avatar": "https://pretalx.linuxdays.cz/media/avatars/GTABBG_kGHp8j0.png", "biography": ".", "public_name": "Luk\u00e1\u0161 Ba\u0159inka", "guid": "7f2cdd6f-8e96-51cb-8ee3-ab532a51173b", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/GTABBG/"}], "links": [], "feedback_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/MB88GC/feedback/", "origin_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/MB88GC/", "attachments": []}, {"guid": "e6ce706d-9346-595f-8c2d-fda172016e74", "code": "WNJCMS", "id": 416, "logo": null, "date": "2025-10-04T12:00:00+02:00", "start": "12:00", "duration": "00:20", "room": "155", "slug": "linuxdays-2025-416-dospivani-s-kubernetes-lekce-ze-seznam-cz-a-cesta-ke-k8s-v-k8s", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/WNJCMS/", "title": "Dosp\u00edv\u00e1n\u00ed s Kubernetes: Lekce ze Seznam.cz a cesta ke K8s v K8s", "subtitle": "", "track": null, "type": "Short Talk", "language": "cs", "abstract": "L\u00e9ta s Kubernetes v Seznam.cz, o historii, p\u0159\u00edtomnosti a budoucnosti, co n\u00e1s p\u00e1lilo, p\u00e1l\u00ed a jak upstream nen\u00ed v\u017edy hotov\u00e9 \u0159e\u0161eni, kdy\u017e mate vlastn\u00ed datacentrum.", "description": "Pod\u011bl\u00edme se o zku\u0161enosti s provozem Kubernetes za posledn\u00edch t\u00e9m\u011b\u0159 10 let, na jak\u00e9 probl\u00e9my jsme narazili s provozem on-prem ve vlastn\u00edch datacentrech, na vlastn\u00edch serverech s vlastn\u00edm balancerem a s\u00ed\u0165ovou infrastrukturou. Nejd\u0159\u00edve se ohl\u00e9dneme za provozem 10 cluster\u016f na Calicu, pote o p\u0159\u00edtomnosti s 150 clustery a Ciliem a n\u00e1sledn\u011b o projektu, na kter\u00e9m aktu\u00e1ln\u011b pracujeme - Nested control plane, \"Kubernetes v Kubernetes\". Co jsme museli \u0159e\u0161it, kam v\u0161ude jsme pos\u00edlali PR na GitHubu a co n\u00e1s \u010dek\u00e1 v n\u00e1sleduj\u00edc\u00edm roce.", "recording_license": "", "do_not_record": false, "persons": [{"code": "LZYJUW", "name": "Ashley CallMeFoxie Reese", "avatar": "https://pretalx.linuxdays.cz/media/avatars/LZYJUW_K3NZTAh.jpg", "biography": "Pracuji ji\u017e 10 let v Seznamu na r\u016fzn\u00fdch infrastruktur\u00e1ln\u00edch pozic\u00edch, z toho 7 let u\u017e s Kubernetes. Mimo denn\u00ed pr\u00e1ci z\u00e1rove\u0148 provozuji mal\u00fd obchod s repasovan\u00fdmi servery.", "public_name": "Ashley CallMeFoxie Reese", "guid": "326396ec-f2a1-5fe8-8d1c-1d5c9d6aaf20", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/LZYJUW/"}, {"code": "ZTHKRT", "name": "Martin Randl", "avatar": "https://pretalx.linuxdays.cz/media/avatars/ZTHKRT_z5g3IIK.jpg", "biography": "~ 10 let zku\u0161enost\u00ed a z\u00e1\u017eitk\u016f s Kubernetes v Seznam.cz.  \r\nNa\u0161i Kubernetes infrastrukturu neust\u00e1le rozv\u00edj\u00edme \u2013 v sou\u010dasnosti se zam\u011b\u0159ujeme na koncept nested control plane, kdy provozujeme control plane jako workload management clusteru.\r\n~ 20 let z\u00e1\u017eitk\u016f se spr\u00e1vou core infrastruktury men\u0161\u00edch ISP", "public_name": "Martin Randl", "guid": "2469b673-9de8-5c64-b206-21cfd3152aa9", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/ZTHKRT/"}], "links": [], "feedback_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/WNJCMS/feedback/", "origin_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/WNJCMS/", "attachments": [{"title": "prezentace", "url": "/media/linuxdays-2025/submissions/WNJCMS/resources/2025-09-LinuxDays-K8_S89iXpc.pdf", "type": "related"}]}, {"guid": "646570f3-ce3d-5670-ab67-874b58a9d93c", "code": "K3BXXD", "id": 409, "logo": "https://pretalx.linuxdays.cz/media/linuxdays-2025/submissions/K3BXXD/Tea_Dating_Advice_logo_Axh1e69.png", "date": "2025-10-04T12:30:00+02:00", "start": "12:30", "duration": "00:20", "room": "155", "slug": "linuxdays-2025-409-jak-ne-zachazet-s-daty-tea-app-data-leaks", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/K3BXXD/", "title": "Jak (ne)zach\u00e1zet s daty - Tea App data leaks", "subtitle": "", "track": null, "type": "Short Talk", "language": "cs", "abstract": "Aplikace Tea zpracov\u00e1vala osobn\u00ed \u00fadaje sv\u00fdch u\u017eivatel\u016f, v\u010detn\u011b nap\u0159\u00edklad ob\u010dansk\u00fdch pr\u016fkaz\u016f. Zabezpe\u010den\u00ed jejich syst\u00e9mu bylo ale velmi slab\u00e9. V p\u0159edn\u00e1\u0161ce v\u00e1s kr\u00e1tce sezn\u00e1m\u00edm p\u0159edev\u0161\u00edm s bezpe\u010dnostn\u00edmi chybami, kter\u00e9 zap\u0159\u00ed\u010dinily dva \u00faniky velmi citliv\u00fdch dat. Tento incident je d\u016fle\u017eit\u00fd hlavn\u011b proto, aby si lid\u00e9 uv\u011bdomili, jak n\u011bkter\u00e9 spole\u010dnosti zach\u00e1zej\u00ed s daty sv\u00fdch u\u017eivatel\u016f.", "description": "Aplikace Tea zpracov\u00e1vala osobn\u00ed \u00fadaje sv\u00fdch u\u017eivatel\u016f, mezi kter\u00fdmi byly i citliv\u00e1 data, nap\u0159\u00edklad ob\u010dansk\u00e9 pr\u016fkazy a chaty. Probl\u00e9mem ale bylo, \u017ee jejich zabezpe\u010den\u00ed bylo nastaven\u00e9 velmi slab\u011b a nedostate\u010dn\u011b. Kv\u016fli tomu do\u0161lo hned ke dv\u011bma velk\u00fdm \u00fanik\u016fm dat, p\u0159i kter\u00fdch se ven dostaly citliv\u00e9 informace u\u017eivatel\u016f.\r\n\r\nV p\u0159edn\u00e1\u0161ce v\u00e1m proto uk\u00e1\u017eu hlavn\u011b konkr\u00e9tn\u00ed chyby v jejich zabezpe\u010den\u00ed, kter\u00e9 tyto \u00faniky umo\u017enily. Zam\u011b\u0159\u00edm se na to, jak \u0161patn\u00e1 ochrana a podcen\u011bn\u00ed z\u00e1kladn\u00edch bezpe\u010dnostn\u00edch pravidel vedly k tomu, \u017ee \u00fato\u010dn\u00edci m\u011bli k dat\u016fm snadn\u00fd p\u0159\u00edstup.\r\n\r\nTento incident je d\u016fle\u017eit\u00fd hlavn\u011b proto, aby si lid\u00e9 uv\u011bdomili, jak n\u011bkter\u00e9 spole\u010dnosti dok\u00e1\u017eou nakl\u00e1dat s osobn\u00edmi \u00fadaji sv\u00fdch u\u017eivatel\u016f. Je to tak\u00e9 uk\u00e1zka toho, \u017ee i mal\u00e1 nedbalost v oblasti bezpe\u010dnosti m\u016f\u017ee m\u00edt velmi v\u00e1\u017en\u00e9 n\u00e1sledky \u2013 a to jak pro u\u017eivatele, tak i pro samotnou firmu.", "recording_license": "", "do_not_record": true, "persons": [{"code": "WKMJGS", "name": "Tom\u00e1\u0161 Bart\u00e1k", "avatar": "https://pretalx.linuxdays.cz/media/avatars/WKMJGS_KS8H23y.png", "biography": "Je mi 17 let a o po\u010d\u00edta\u010de se zaj\u00edm\u00e1m u\u017e v\u00edce ne\u017e p\u011bt let. Moment\u00e1ln\u011b jsem studentem SS\u0160VT a zam\u011b\u0159uji se p\u0159edev\u0161\u00edm na v\u00fdvoj softwaru a kyberbezpe\u010dnost. Ovl\u00e1d\u00e1m hlavn\u011b C# a Python a nyn\u00ed se u\u010d\u00edm C/C++, kter\u00e9 pot\u0159ebuji pro pr\u00e1ci a kter\u00e9 m\u00e1 z\u00e1rove\u0148 velk\u00e9 vyu\u017eit\u00ed v oblasti kyberbezpe\u010dnosti. B\u011bhem studia pracuji ve spole\u010dnosti AgentFly Technologies, kter\u00e1 se zam\u011b\u0159uje na v\u00fdvoj vojensk\u00fdch dron\u016f.\r\n\r\nWeb: https://batacek.eu/", "public_name": "Tom\u00e1\u0161 Bart\u00e1k", "guid": "ab0eb168-7eae-5cbf-89f5-37344b6f9b05", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/WKMJGS/"}], "links": [{"title": "Prezentace", "url": "https://batacek.eu/linuxdays2025/TeaApp_DataLeaks-BartakTomas-LinuxDays2025.pdf", "type": "related"}], "feedback_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/K3BXXD/feedback/", "origin_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/K3BXXD/", "attachments": []}, {"guid": "8226f984-b6d2-5480-93c8-d77fbea2a906", "code": "KMAADK", "id": 459, "logo": null, "date": "2025-10-04T13:00:00+02:00", "start": "13:00", "duration": "00:50", "room": "155", "slug": "linuxdays-2025-459-pokrocile-praktiky-v-c", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/KMAADK/", "title": "Pokro\u010dil\u00e9 praktiky v C", "subtitle": "", "track": null, "type": "Talk", "language": "cs", "abstract": "Programovac\u00ed jazyk C je v velmi jednoduch\u00fd na nau\u010den\u00ed, ale skute\u010dn\u00e9 mistrovstv\u00ed toho jazyka m\u016f\u017ee b\u00fdt mnohem slo\u017eit\u011bj\u0161\u00ed, a\u017e nemo\u017en\u00e9. V\u011bt\u0161ina z program\u00e1tor\u016f se s n\u00edm setkala, ov\u0161em v\u011bt\u0161inou se jednalo o C89 \u010di C99, m\u00e9n\u011b pak s C11 a v\u011bt\u0161inou u\u017e v\u016fbec ne C23. A kdy\u017e se do mixu p\u0159idaj\u00ed GNU \u010di LLVM roz\u0161\u00ed\u0159en\u00ed, tak se n\u00e1m r\u00e1zem otev\u00edraj\u00ed praktiky a metody kter\u00e9 se vyrovnaj\u00ed mnohem modern\u011bj\u0161\u00edm jazyk\u016fm. V t\u00e9to p\u0159edn\u00e1\u0161ce chci uk\u00e1zat n\u011bkter\u00e9 pokro\u010dil\u00e9 tipy co je mo\u017en\u00e9 v C pou\u017e\u00edt. Pod\u00edv\u00e1me se na atributy, makra, i pointer aritmetiku. Bude to vertik\u00e1ln\u00ed \u0159ez uk\u00e1zan\u00fd na p\u0159\u00edkladech.", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "KBSEUJ", "name": "Karel Ko\u010d\u00ed", "avatar": "https://pretalx.linuxdays.cz/media/avatars/IMG_20240728_110842-crop_R1D5qXz.jpg", "biography": "Aktu\u00e1ln\u011b pracuji na v\u00fdvoji Embedded za\u0159\u00edzen\u00ed pro kolejov\u00e9 vozidla MHD. P\u0159edt\u00edm jsem pracoval na projektu Turris a je\u0161t\u011b p\u0159ed t\u00edm jsem studoval syst\u00e9my \u0159\u00edzen\u00ed na \u010cVUT. Ob\u010das cvi\u010d\u00edm p\u0159edm\u011bt Architektura Po\u010d\u00edta\u010d\u016f.", "public_name": "Karel Ko\u010d\u00ed", "guid": "d0bfe3a0-51b5-503c-abb5-cdb6505f8ae4", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/KBSEUJ/"}], "links": [{"title": "Git", "url": "https://git.cynerd.cz/presentations/tree/2025-linuxdays", "type": "related"}], "feedback_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/KMAADK/feedback/", "origin_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/KMAADK/", "attachments": [{"title": "slidy", "url": "/media/linuxdays-2025/submissions/KMAADK/resources/pres_Fs8oePg.pdf", "type": "related"}]}, {"guid": "1149e3cd-e5b9-5579-8a73-9363e7c86c69", "code": "MGAKKK", "id": 465, "logo": "https://pretalx.linuxdays.cz/media/linuxdays-2025/submissions/MGAKKK/rad21_3zPq3L3.png", "date": "2025-10-04T14:00:00+02:00", "start": "14:00", "duration": "00:50", "room": "155", "slug": "linuxdays-2025-465-radarova-technika-pro-21-stoleti", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/MGAKKK/", "title": "Radarov\u00e1 technika pro 21. stolet\u00ed", "subtitle": "", "track": null, "type": "Talk", "language": "cs", "abstract": "P\u0159ehled aktu\u00e1ln\u00edho stavu a v\u00fdvoje radarov\u00e9 techniky. Uk\u00e1\u017eeme si r\u016fzn\u00e9 druhy radar\u016f: pasivn\u00ed zam\u011b\u0159ov\u00e1n\u00ed vys\u00edla\u010d\u016f, bistatick\u00fd radar, klasick\u00fd prim\u00e1rn\u00ed radar (na po\u010das\u00ed i na letadla), budoucnost s f\u00e1zov\u00fdm polem (a jak vlastn\u011b funguje Starlink termin\u00e1l). U ka\u017ed\u00e9 kategorie si uk\u00e1\u017eeme historick\u00fd v\u00fdvoj a sou\u010dasn\u00fd state-of-the-art, ale tak\u00e9 \"co se s t\u00edm d\u00e1 d\u011blat za vylomeniny\", nap\u0159\u00edklad kdy\u017e to neukazuje jenom \"\u017ee tam n\u011bco je\", ale i \"co to je\" - dost\u00e1v\u00e1me r\u016fzn\u00e1 dal\u0161\u00ed data, kter\u00e1 na prvn\u00ed pohled nejsou laikovi \u00fapln\u011b z\u0159ejm\u00e1, a kter\u00e1 umo\u017en\u00ed identifikaci c\u00edle.\r\n\r\nP\u0159edn\u00e1\u0161ku budu orientovat na \"do it yourself\" - mysl\u00edm si, \u017ee dnes je v mo\u017enostech motivovan\u00e9ho jednotlivce nebo mal\u00e9 skupiny postavit si funk\u010dn\u00ed modely prezentovan\u00fdch za\u0159\u00edzen\u00ed, a osobn\u011b jsem to tak s n\u011bkter\u00fdmi z nich u\u017e ud\u011blal. Tak\u017ee budou i n\u011bjak\u00e9 pozn\u00e1mky z realizace a vysv\u011btlen\u00ed jak n\u00e1m to vlastn\u011b funguje (p\u0159edn\u00e1\u0161ej\u00edc\u00ed spoluzalo\u017eil startup, kter\u00fd te\u010f prod\u00e1v\u00e1 radary po sv\u011bt\u011b).", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "VXGQDN", "name": "Jan Hrach", "avatar": "https://pretalx.linuxdays.cz/media/avatars/VXGQDN_xRAETWU.jpeg", "biography": "Vyvinul radar na po\u010das\u00ed hodn\u00fd 21. stolet\u00ed a spoluzalo\u017eil startup, kter\u00fd je te\u010f vyr\u00e1b\u00ed a prod\u00e1v\u00e1 po sv\u011bt\u011b.\r\n\r\nRekrea\u010dn\u011b se zaj\u00edm\u00e1 o nastupuj\u00edc\u00ed technologie, jako je aktu\u00e1ln\u011b t\u0159eba AI.", "public_name": "Jan Hrach", "guid": "077885ce-e2a2-5739-bea5-2621b71869b8", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/VXGQDN/"}], "links": [], "feedback_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/MGAKKK/feedback/", "origin_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/MGAKKK/", "attachments": [{"title": "slidy", "url": "/media/linuxdays-2025/submissions/MGAKKK/resources/rad21-linuxdays_jpObXpt.pdf", "type": "related"}]}, {"guid": "9326360e-a69c-5d8d-b97b-a657e1efc32e", "code": "GDPCKK", "id": 445, "logo": null, "date": "2025-10-04T15:00:00+02:00", "start": "15:00", "duration": "00:50", "room": "155", "slug": "linuxdays-2025-445-llama-stack-framework-pro-tvorbu-aplikaci-s-ai", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/GDPCKK/", "title": "Llama Stack - framework pro tvorbu aplikac\u00ed s AI", "subtitle": "", "track": null, "type": "Talk", "language": "cs", "abstract": "Pravd\u011bpodobn\u011b naprost\u00e1 v\u011bt\u0161ina lid\u00ed, kte\u0159\u00ed se pohybuj\u00ed v oblasti informatiky, zaznamenalo revoluci, kterou v posledn\u00edch dvou \u010di t\u0159\u00ed letech p\u0159inesla generativn\u00ed um\u011bl\u00e1 inteligence (generative AI). V sou\u010dasnosti se zd\u00e1, \u017ee prakticky ka\u017ed\u00e1 nov\u00e1 verze v\u011bt\u0161iny aplikac\u00ed je vybavena v\u00edce \u010di m\u00e9n\u011b sofistikovanou um\u011blou inteligenc\u00ed, co\u017e pochopiteln\u011b p\u0159in\u00e1\u0161\u00ed jak klady, tak i z\u00e1pory.\r\n\r\nA pochopiteln\u011b nastala situace b\u011b\u017en\u00e1 v cel\u00e9m IT: spole\u010dn\u011b s rozvojem generativn\u00ed AI (nejv\u00edce pak velk\u00fdch jazykov\u00fdch model\u016f neboli LLM) vzniklo i velk\u00e9 mno\u017estv\u00ed knihoven a framework\u016f ur\u010den\u00fdch pro v\u00fdvoj aplikac\u00ed vybaven\u00fdch n\u011bjakou formou AI, p\u0159i\u010dem\u017e mnohdy nejsou tyto knihovny roz\u0161i\u0159iteln\u00e9, maj\u00ed mnoho chyb, nepodporuj\u00ed v\u0161echny pot\u0159ebn\u00e9 vlastnosti (z posledn\u00ed doby agent-to-agent neboli A2A) apod. V t\u00e9to p\u0159edn\u00e1\u0161ce se sezn\u00e1m\u00edme s jedn\u00edm z pokro\u010dil\u00fdch framework\u016f, kter\u00e9 se v t\u00e9to oblasti pou\u017e\u00edvaj\u00ed - Llama Stack.", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "7KYJ9S", "name": "Pavel Ti\u0161novsk\u00fd", "avatar": null, "biography": "Pavel Ti\u0161novsk\u00fd vystudoval VUT FIT a v sou\u010dasn\u00e9 dob\u011b pracuje na projektech vytv\u00e1\u0159en\u00fdch v jazyc\u00edch Python a Go. Pro vlastn\u00ed projekty a v\u00fdzkum pou\u017e\u00edv\u00e1 p\u0159ev\u00e1\u017en\u011b programovac\u00ed jazyk Clojure, v od\u016fvodn\u011bn\u00fdch p\u0159\u00edpadech i Javu (to ji\u017e dlouho ne), Python, ANSI C a pro n\u011bkolik hobby projekt\u016f i assembler pro starod\u00e1vn\u00e9 osmibitov\u00e9 mikroprocesory.", "public_name": "Pavel Ti\u0161novsk\u00fd", "guid": "741472dd-5393-52a7-8d99-68dd41960611", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/7KYJ9S/"}], "links": [{"title": "Slajdy z p\u0159edn\u00e1\u0161ky online", "url": "https://tisnik.github.io/slides/llama_stack.html#/", "type": "related"}], "feedback_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/GDPCKK/feedback/", "origin_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/GDPCKK/", "attachments": [{"title": "Slajdy z p\u0159edn\u00e1\u0161ky (PDF)", "url": "/media/linuxdays-2025/submissions/GDPCKK/resources/Llama_Stack_RJFfmA2.pdf", "type": "related"}]}, {"guid": "06e566d5-2b7f-5f5f-9fe3-5ab7b8900d69", "code": "LE8PBT", "id": 440, "logo": "https://pretalx.linuxdays.cz/media/linuxdays-2025/submissions/LE8PBT/tux_z0XgcM6.jpg", "date": "2025-10-04T16:00:00+02:00", "start": "16:00", "duration": "00:20", "room": "155", "slug": "linuxdays-2025-440-llm-jako-nastroj-v-prikazove-radce", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/LE8PBT/", "title": "LLM jako n\u00e1stroj v p\u0159\u00edkazov\u00e9 \u0159\u00e1dce", "subtitle": "", "track": null, "type": "Short Talk", "language": "cs", "abstract": "D\u00e1 se i p\u0159es v\u0161echen hype k velk\u00fdm jazykov\u00fdm model\u016fm (LLM) p\u0159istupovat minimalisticky? V p\u0159edn\u00e1\u0161ce si p\u0159edstav\u00edme Python bal\u00ed\u010dek `llm`, kter\u00fd se sv\u00fdm \u00fasporn\u00fdm rozhran\u00edm a modul\u00e1rn\u00edm p\u0159\u00edstupem p\u0159ibli\u017euje unixov\u00e9 filozofii. Uk\u00e1\u017eeme si, jak si pomoc\u00ed tohoto n\u00e1stroje zjednodu\u0161it psan\u00ed p\u0159\u00edkaz\u016f v bashi. Taky se zam\u011b\u0159\u00edme na to, jak LLMka pomoc\u00ed rour propojit s dal\u0161\u00edmi termin\u00e1lov\u00fdmi n\u00e1stroji. Pou\u017e\u00edvat p\u0159i tom budeme *otev\u0159en\u00e9* modely \u2013 a to i takov\u00e9, kter\u00e9 zvl\u00e1dneme rozb\u011bhat na osobn\u00edm laptopu.", "description": "Slidy v HTML: https://kasnerz.github.io/slides/2025-10-linux-days-llm", "recording_license": "", "do_not_record": false, "persons": [{"code": "CD9KJV", "name": "Zden\u011bk Kasner", "avatar": "https://pretalx.linuxdays.cz/media/avatars/CD9KJV_kLHf5Hf.jpg", "biography": "Od p\u0159\u00edrody FI\u0164\u00e1k, povol\u00e1n\u00edm Matfyz\u00e1k. Zkoumal jsem jazykov\u00e9 modely, je\u0161t\u011b ne\u017e za\u010daly b\u00fdt velk\u00e9. U\u017e 12 let fr\u010d\u00edm na Linuxu a neohl\u00ed\u017e\u00edm se zp\u011bt.", "public_name": "Zden\u011bk Kasner", "guid": "e7ee7cfb-b4c2-5849-ab28-f8cf524fb357", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/CD9KJV/"}], "links": [{"title": "Slidy HTML", "url": "https://kasnerz.github.io/slides/2025-10-linux-days-llm/", "type": "related"}], "feedback_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/LE8PBT/feedback/", "origin_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/LE8PBT/", "attachments": [{"title": "Slidy PDF (bez animac\u00ed)", "url": "/media/linuxdays-2025/submissions/LE8PBT/resources/slides_Hi18gji.pdf", "type": "related"}]}, {"guid": "86856d97-0efe-5304-bce4-1007a405a3b8", "code": "YYZUG3", "id": 468, "logo": null, "date": "2025-10-04T16:30:00+02:00", "start": "16:30", "duration": "00:50", "room": "155", "slug": "linuxdays-2025-468-testovani-webu-pro-mirne-pokrocile", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/YYZUG3/", "title": "Testov\u00e1n\u00ed web\u016f pro m\u00edrn\u011b pokro\u010dil\u00e9", "subtitle": "", "track": null, "type": "Talk", "language": "cs", "abstract": "Poj\u010fme spole\u010dn\u011b \"potr\u00e1pit\" webov\u00e9 na\u0161e aplikace z\u00edskat z toho co nejv\u00edce dat! P\u0159edn\u00e1\u0161ka bude pr\u016f\u0159ez post\u0159eh\u016f z rozli\u010dn\u00fdch zp\u016fsob\u016f testov\u00e1n\u00ed webov\u00fdch aplikac\u00ed a\u0165 u\u017e z hlediska funk\u010dnosti, tak i v\u00fdkonu. Pod\u00edv\u00e1me se nejen na to, jak obohatit na\u0161e CI/CD pipeliny, ale i na to, jak automatizovat testov\u00e1n\u00ed a pak jen sledovat dashboard t\u0159eba v Grafan\u011b.", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "MWTWRV", "name": "Jakub Vokoun", "avatar": "https://pretalx.linuxdays.cz/media/avatars/Slackware_Tux_250x250_5vguX9n.png", "biography": "\"L\u00edn\u00fd\" DevOps\u00e1k, kter\u00fd automatizuje v\u0161e, co mu p\u0159\u00edjde pod ruce. :-)", "public_name": "Jakub Vokoun", "guid": "001085a5-46b5-5c85-bad1-d0a0dd41331a", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/MWTWRV/"}], "links": [], "feedback_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/YYZUG3/feedback/", "origin_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/YYZUG3/", "attachments": [{"title": "Prezentace", "url": "/media/linuxdays-2025/submissions/YYZUG3/resources/pres_hwFqymO.pdf", "type": "related"}]}], "107": [{"guid": "c532833d-90d9-5faa-b80d-6e554607084a", "code": "JLSMXU", "id": 419, "logo": null, "date": "2025-10-04T10:40:00+02:00", "start": "10:40", "duration": "00:10", "room": "107", "slug": "linuxdays-2025-419-akusticka-detekce-dronu", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/JLSMXU/", "title": "Akustick\u00e1 detekce dron\u016f", "subtitle": "", "track": "Workshops", "type": "Lightning Talk", "language": "cs", "abstract": "Akustick\u00e1 detekce dron\u016f pomoc\u00ed sestavy sm\u011brov\u00fdch mikrofon\u016f na Raspberry Pi.\r\nSouhrn dosavadn\u00edch v\u00fdsledk\u016f a p\u0159edstaven\u00ed pl\u00e1n\u016f na dal\u0161\u00ed roz\u0161\u00ed\u0159en\u00ed syst\u00e9mu.\r\n\r\n #Python, #ReSpeaker, #Dji Mini2 SE", "description": "p\u0159edstaven\u00ed dosavadn\u00edch v\u00fdsledk\u016f v p\u0159esnosti a spolehlivosti detekce dron\u016f pomoc\u00ed 4 sm\u011brov\u00fdch mikrofon\u016f a p\u0159edstaven\u00ed pl\u00e1n\u016f na dal\u0161\u00ed rozvoj syst\u00e9mu", "recording_license": "", "do_not_record": false, "persons": [{"code": "RUZPJC", "name": "Lud\u011bk Fedurca", "avatar": null, "biography": "Zku\u0161en\u00fd IT profesion\u00e1l s v\u00edce ne\u017e 17 lety praxe v syst\u00e9mov\u00e9 a s\u00ed\u0165ov\u00e9 administraci, v posledn\u00edch letech se silnou specializac\u00ed na kybernetickou bezpe\u010dnost. Prokazateln\u00e9 zku\u0161enosti s veden\u00edm t\u00fdmu, spr\u00e1vou linuxov\u00fdch syst\u00e9m\u016f, virtualizac\u00ed a automatizac\u00ed provozu. Dlouhodob\u011b p\u016fsob\u00ed tak\u00e9 jako nez\u00e1visl\u00fd IT konzultant pro spr\u00e1vu s\u00edt\u00ed, bezpe\u010dnostn\u00edch syst\u00e9m\u016f a automatizaci chytr\u00fdch dom\u00e1cnost\u00ed.\r\n\r\nhttps://www.linkedin.com/in/ludek-fedurca-76854335/", "public_name": "Lud\u011bk Fedurca", "guid": "f98b0ce8-359c-545a-9f13-640db1b23e9e", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/RUZPJC/"}], "links": [], "feedback_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/JLSMXU/feedback/", "origin_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/JLSMXU/", "attachments": [{"title": "prezentace", "url": "/media/linuxdays-2025/submissions/JLSMXU/resources/PREZ_akusticka_detek_KIhkAOV.pdf", "type": "related"}]}, {"guid": "47a0e005-d67c-5189-bda0-edbfce2ce0dd", "code": "JAFFCJ", "id": 417, "logo": null, "date": "2025-10-04T11:00:00+02:00", "start": "11:00", "duration": "00:50", "room": "107", "slug": "linuxdays-2025-417-zaklady-ansible", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/JAFFCJ/", "title": "Z\u00e1klady Ansible", "subtitle": "", "track": null, "type": "Talk", "language": "cs", "abstract": "V p\u0159edn\u00e1\u0161ce v\u00e1s uvedeme do ekosyst\u00e9mu automatiza\u010dn\u00edho n\u00e1stroje Ansible, d\u00edky kter\u00e9mu d\u011bl\u00e1me v Seznamu na\u0161i \u010d\u00e1st cloudu. Probereme pojmy jako inventory, playbook, role a spoustu dal\u0161\u00edch. Pod\u00edv\u00e1me se jak se spr\u00e1vn\u011b pou\u017e\u00edvaj\u00ed a z\u00e1rove\u0148 v\u00e1m zkus\u00edme p\u0159edat prvn\u00ed best practices spole\u010dn\u011b s tipy z praxe. Po p\u0159edn\u00e1\u0161ce v\u00e1s r\u00e1di uvid\u00edme na workshopu, kde si m\u016f\u017eete v\u0161e vyzkou\u0161et.", "description": "P\u0159edn\u00e1\u0161ka je ur\u010dena pro za\u010d\u00e1te\u010dn\u00edky, ale i ty, kte\u0159\u00ed si cht\u011bj\u00ed osv\u011b\u017eit Ansible a jeho principy od za\u010d\u00e1tku. Projdeme si z\u00e1klady Ansible, kter\u00e9 si pot\u00e9 vyzkou\u0161\u00edte v navazuj\u00edc\u00edm workshopu.", "recording_license": "", "do_not_record": false, "persons": [{"code": "WTVC8Y", "name": "Radim Lipov\u010dan", "avatar": "https://pretalx.linuxdays.cz/media/avatars/daab12ff0be02d8d41fb08c01ffa5ba5_KLIfnJj.jpg", "biography": null, "public_name": "Radim Lipov\u010dan", "guid": "29cf638a-67a9-56db-a94d-60eb64edc3a3", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/WTVC8Y/"}, {"code": "FAVDKS", "name": "Petr Krch", "avatar": "https://pretalx.linuxdays.cz/media/avatars/6I3A30693_kMjx2xk.JPG", "biography": "V\u00edc ne\u017e 12 let za\u017e\u00edv\u00e1m dobrodru\u017estv\u00ed v provozu Seznam.cz", "public_name": "Petr Krch", "guid": "6e8aed91-0a68-5dc2-99df-c6dc408ede59", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/FAVDKS/"}], "links": [], "feedback_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/JAFFCJ/feedback/", "origin_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/JAFFCJ/", "attachments": [{"title": "Slides", "url": "/media/linuxdays-2025/submissions/JAFFCJ/resources/presentation_PG2sQux.pdf", "type": "related"}]}, {"guid": "55e3c364-9a74-556d-a4d9-21b63fa95501", "code": "BP7XDB", "id": 444, "logo": null, "date": "2025-10-04T12:00:00+02:00", "start": "12:00", "duration": "00:50", "room": "107", "slug": "linuxdays-2025-444-unmasking-kubernetes-network-bottlenecks-with-ebpf", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/BP7XDB/", "title": "Unmasking Kubernetes Network Bottlenecks with eBPF", "subtitle": "", "track": "Content in English", "type": "Talk", "language": "en", "abstract": "Kubernetes networking is complex, and bottlenecks like DNS failures, packet drops, or service misrouting are often hidden from traditional monitoring tools. These subtle issues can cause latency spikes and degraded application performance that are difficult to diagnose with logs or standard metrics alone.\r\n\r\nThis talk introduces how eBPF-based observability can provide deep, low-overhead visibility into Kubernetes network flows, combined with zero-code instrumentation for applications. Using real-world examples, you\u2019ll learn how to leverage Beyla\u2019s detailed insights, such as DNS query tracking and pod-to-pod traffic analysis, to quickly identify and resolve networking bottlenecks.", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "CHG79D", "name": "Ishan Jain", "avatar": "https://pretalx.linuxdays.cz/media/avatars/CHG79D_5VZ0smG.jpg", "biography": "An ex-rocket science student turned SRE and now a Developer Experience Engineer at Grafana Labs, I am a core maintainer for the Grafana Ansible Collection and the Grafana Operator, with over 2 million downloads combined.", "public_name": "Ishan Jain", "guid": "fe752791-076c-5802-855b-c0b41cabf349", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/CHG79D/"}], "links": [{"title": "Session slides pdf", "url": "https://www.canva.com/design/DAG0iOfpyF0/sFgLgFKjCVLgFy1tiUJzYQ/edit", "type": "related"}], "feedback_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/BP7XDB/feedback/", "origin_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/BP7XDB/", "attachments": [{"title": "Session Slides", "url": "/media/linuxdays-2025/submissions/BP7XDB/resources/Unmasking_Kubernete_dtSTqnk.pptx", "type": "related"}]}, {"guid": "7a8a43b6-f6dd-50e0-8ff4-d1b296b7cfc6", "code": "YENLS9", "id": 449, "logo": null, "date": "2025-10-04T13:00:00+02:00", "start": "13:00", "duration": "00:50", "room": "107", "slug": "linuxdays-2025-449-navrat-do-doby-kamenne-assembler-v-linuxu", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/YENLS9/", "title": "N\u00e1vrat do doby kamenn\u00e9? Assembler v Linuxu", "subtitle": "", "track": null, "type": "Talk", "language": "cs", "abstract": "Naprost\u00e1 v\u011bt\u0161ina modern\u00edch aplikac\u00ed je vyv\u00edjena ve vy\u0161\u0161\u00edch programovac\u00edch jazyc\u00edch. Ov\u0161em i p\u0159esto se v praxi setk\u00e1me s pot\u0159ebou prov\u00e1d\u011bn\u00ed n\u00edzko\u00farov\u0148ov\u00fdch operac\u00ed. A pr\u00e1v\u011b pro tyto \u00fa\u010dely je mo\u017en\u00e9 vyu\u017e\u00edt assembler.\r\n\r\nV t\u00e9to p\u0159edn\u00e1\u0161ce si uk\u00e1\u017eeme z\u00e1klady pou\u017eit\u00ed assembleru v Linuxu. V\u00fdklad je zam\u011b\u0159en i pro za\u010d\u00e1te\u010dn\u00edky, kte\u0159\u00ed se pouze cht\u011bj\u00ed sezn\u00e1mit se z\u00e1klady t\u00e9to st\u00e1le u\u017eite\u010dn\u00e9 technologie.", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "7KYJ9S", "name": "Pavel Ti\u0161novsk\u00fd", "avatar": null, "biography": "Pavel Ti\u0161novsk\u00fd vystudoval VUT FIT a v sou\u010dasn\u00e9 dob\u011b pracuje na projektech vytv\u00e1\u0159en\u00fdch v jazyc\u00edch Python a Go. Pro vlastn\u00ed projekty a v\u00fdzkum pou\u017e\u00edv\u00e1 p\u0159ev\u00e1\u017en\u011b programovac\u00ed jazyk Clojure, v od\u016fvodn\u011bn\u00fdch p\u0159\u00edpadech i Javu (to ji\u017e dlouho ne), Python, ANSI C a pro n\u011bkolik hobby projekt\u016f i assembler pro starod\u00e1vn\u00e9 osmibitov\u00e9 mikroprocesory.", "public_name": "Pavel Ti\u0161novsk\u00fd", "guid": "741472dd-5393-52a7-8d99-68dd41960611", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/7KYJ9S/"}], "links": [], "feedback_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/YENLS9/feedback/", "origin_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/YENLS9/", "attachments": [{"title": "Slajdy z p\u0159edn\u00e1\u0161ky (PDF)", "url": "/media/linuxdays-2025/submissions/YENLS9/resources/Assembler_Iu4K0ml.pdf", "type": "related"}]}, {"guid": "070c7dc2-f194-511f-9d4f-2b7cc0731be6", "code": "3DPXPP", "id": 462, "logo": null, "date": "2025-10-04T14:00:00+02:00", "start": "14:00", "duration": "00:20", "room": "107", "slug": "linuxdays-2025-462-napul-sezvykany-kod-aneb-pozvanka-k-blbnuti-s-gcc", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/3DPXPP/", "title": "Nap\u016fl se\u017ev\u00fdkan\u00fd k\u00f3d aneb pozv\u00e1nka k blbnut\u00ed s GCC", "subtitle": "", "track": null, "type": "Short Talk", "language": "cs", "abstract": "Zkou\u0161eli jste si n\u011bkdy vydumpovat, jak vypad\u00e1 v\u00e1\u0161 zdroj\u00e1k v pr\u016fb\u011bhu kompilace? J\u00e1 bych v\u00e1m cht\u011bl uk\u00e1zat, \u017ee sledovat, jak GCC\u010dko postupn\u011b optimalizuje program m\u016f\u017ee ka\u017ed\u00fd a \u017ee to je docela sranda. P\u0159edn\u00e1\u0161ka bude ur\u010dit\u011b p\u0159\u00edstupn\u00e1 i lidem, kte\u0159\u00ed v\u016fbec netu\u0161\u00ed, jak funguje kompil\u00e1tor.", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "JKUT9B", "name": "Filip Kastl", "avatar": "https://pretalx.linuxdays.cz/media/avatars/JKUT9B_MAOLin8.jpeg", "biography": "V SUSE pom\u00e1h\u00e1m zaji\u0161\u0165ovat, \u017ee GCC\u010dko kompiluje spr\u00e1vn\u011b a \u017ee z n\u011bho padaj\u00ed co nejlep\u0161\u00ed bin\u00e1rky. Chv\u00edli jsem se kup\u0159\u00edkladu hrabal v optimalizaci switch statement\u016f. Te\u010f se zab\u00fdv\u00e1m alias anal\u00fdzou. Soub\u011b\u017en\u011b si dod\u011bl\u00e1v\u00e1m magistra na matfyzu.\r\n\r\nfilip.kastl@suse.com", "public_name": "Filip Kastl", "guid": "93f59121-dd9a-502e-91be-acad99e5643f", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/JKUT9B/"}], "links": [], "feedback_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/3DPXPP/feedback/", "origin_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/3DPXPP/", "attachments": [{"title": "Slidy k p\u0159edn\u00e1\u0161ce v2", "url": "/media/linuxdays-2025/submissions/3DPXPP/resources/presentation_65oFtjf.pdf", "type": "related"}]}, {"guid": "c8077f33-e8e4-50de-8832-549fe1141c72", "code": "9ZKPEA", "id": 463, "logo": null, "date": "2025-10-04T14:30:00+02:00", "start": "14:30", "duration": "00:50", "room": "107", "slug": "linuxdays-2025-463-pokrocile-optimalizace-v-gcc", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/9ZKPEA/", "title": "Pokro\u010dil\u00e9 optimalizace v GCC", "subtitle": "", "track": null, "type": "Talk", "language": "cs", "abstract": "Optimalizace v p\u0159eklada\u010di GCC se neust\u00e1le vyv\u00edj\u00ed aby pokryly pot\u0159eby modern\u00edch programovac\u00edch jazyk\u016f i procesor\u016f. P\u0159edn\u00e1\u0161ka uk\u00e1\u017ee n\u011bkter\u00e9 z pokro\u010dil\u00fdch optimalizac\u00ed, kter\u00e9 byly implementov\u00e1ny v posledn\u00edch letech a na \u010dem se aktu\u00e1ln\u011b pracuje.", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "XQL3K8", "name": "Jan Hubi\u010dka", "avatar": null, "biography": "Honza Hubi\u010dka pracuje na GCC od roku 1997. Od roku 2000 pracuje jako v\u00fdvoj\u00e1\u0159 v SUSElabs. Napsal p\u016fvodn\u00ed port GCC na architekturu x86-64, kter\u00fd dodnes spravuje. V GCC spravuje tak\u00e9 inter-procedur\u00e1ln\u00ed optimalizaci, link-time optimalizaci, optimalizaci zalo\u017eenou na profilu.\r\n\r\nMimo to pracuje jako matematik na Matfyzu, v mal\u00e9m muzeu fotografie v T\u00e1bo\u0159e a tak\u00e9 se v\u011bnuje digitalizaci ran\u00e9 barevn\u00e9 fotografie.", "public_name": "Jan Hubi\u010dka", "guid": "df9ed01a-3e20-5f6c-9c03-c6b937d22b12", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/XQL3K8/"}], "links": [], "feedback_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/9ZKPEA/feedback/", "origin_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/9ZKPEA/", "attachments": [{"title": "prezentace", "url": "/media/linuxdays-2025/submissions/9ZKPEA/resources/linuxdays2025_DmseT1V.pdf", "type": "related"}]}, {"guid": "c0b09370-5be8-59af-92ba-5b523fa48735", "code": "KGHCKC", "id": 429, "logo": "https://pretalx.linuxdays.cz/media/linuxdays-2025/submissions/KGHCKC/bruno-figueiredo-r6WPOp_q_xM-u_Iqc1RYc.jpg", "date": "2025-10-04T15:30:00+02:00", "start": "15:30", "duration": "00:50", "room": "107", "slug": "linuxdays-2025-429-disobey-foss-tools-to-fight-back", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/KGHCKC/", "title": "Disobey: FOSS tools to fight back!", "subtitle": "", "track": "Content in English", "type": "Talk", "language": "en", "abstract": "**Everyone** is trying to control your communication. The reasons vary from simple curiosity to pure commercial interest, all the way to using it to control one's thoughts.\r\n\r\nAre there any ways to fight back, and why are [free software](https://www.fsf.org/about/what-is-free-software) and open-source tools a good alternative to the ones you use? \r\n\r\nAs [cypherpunks](https://en.wikipedia.org/wiki/Cypherpunk), do we have the obligation to help people be ready for the worst, or should we only take care of ourselves?\r\n\r\nIn this talk, I will cover my experience with fighting back against #chatcontrol - what I have learned and what happened after I decided to give up. Instead of losing my dignity and time with politicians, I decided to teach people how to fight back!\r\n\r\nThis talk will not be recorded. **Please bring pen and paper to write what you learn!**", "description": "", "recording_license": "", "do_not_record": true, "persons": [{"code": "EXBZSX", "name": "Bogomil Shopov - \u0411\u043e\u0433\u043e", "avatar": "https://pretalx.linuxdays.cz/media/avatars/EXBZSX_PQYZXdi.jpg", "biography": "Human. Artist. Hacker. Pra\u017ean. \r\n\r\nI care about free and open-source software(F/LOSS), cybersecurity, ethical design, privacy, and technology. 20+ experience in technology. 40+ in being human. I encourage people to become better humans with heavy metal and technologies. I also promote technologies to be considerate of humans. Let's see how it goes!\r\n\r\nN.B \" \u0411\u043e\u0433\u043e\" Is in Bulgarian, and it's read as Bogo.\r\nmail: bogomil at talkweb.eu", "public_name": "Bogomil Shopov - \u0411\u043e\u0433\u043e", "guid": "f4b1277c-f728-59e3-afe3-6f5c0df5b85e", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/EXBZSX/"}], "links": [{"title": "My mastodon/fediverse", "url": "https://hapyyr.com/@bogo", "type": "related"}, {"title": "My Blog", "url": "https://talkweb.eu/", "type": "related"}], "feedback_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/KGHCKC/feedback/", "origin_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/KGHCKC/", "attachments": [{"title": "The slides. Use them wisely!", "url": "/media/linuxdays-2025/submissions/KGHCKC/resources/FOSS_tools_to_fight__EE3GIn4.pdf", "type": "related"}]}, {"guid": "4385dd95-663f-5a1f-9399-c94f3807bd8d", "code": "VWNAXG", "id": 424, "logo": null, "date": "2025-10-04T16:30:00+02:00", "start": "16:30", "duration": "00:50", "room": "107", "slug": "linuxdays-2025-424-binary-coverage-finding-blind-spots-in-software-testing", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/VWNAXG/", "title": "Binary Coverage: Finding Blind Spots In Software Testing", "subtitle": "", "track": "Content in English", "type": "Talk", "language": "en", "abstract": "At SUSE QE we run over 15000 automated software tests, but we wanted a clearer picture of how much of the code in our binaries those tests actually cover. That\u2019s why we built the Binary Coverage Project. It shows what\u2019s covered, points out the functions we\u2019ve missed, and makes it easy to dig into the gaps. We\u2019ll walk through how it works, how you can run it yourself, and show some real examples.\r\n\r\nThe Binary Coverage Project uses Intel PIN to analyze running code and measure which parts are being executed during testing. The tool generates results in multiple formats, from high-level overviews to detailed lists of functions that are covered -- or completely missed -- for specific binaries.\r\n\r\nIn this talk, We\u2019ll explain how the project works under the hood, show you how to run it yourself, and walk through example outputs. You\u2019ll see both the big-picture insights and the practical details that make it easier to spot gaps in coverage and strengthen your test suite.", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "JCGNU7", "name": "Emil Miler", "avatar": "https://pretalx.linuxdays.cz/media/avatars/JCGNU7_Yd2Kpk1.jpg", "biography": "What's up? I am Emil; living in Prague.\r\n\r\nI work at SUSE as a security QA engineer. I also work (or have worked) as a teacher at several Prague schools, mainly at Gymn\u00e1zium Jana Keplera.\r\n\r\nhttps://em.0x45.cz/", "public_name": "Emil Miler", "guid": "c9fb57ba-6c95-5bdf-b5b0-c1f3b2055aa1", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/JCGNU7/"}, {"code": "CPUZQU", "name": "Andrea Manzini", "avatar": "https://pretalx.linuxdays.cz/media/avatars/CPUZQU_bJCur6f.jpg", "biography": "Linux sysadmin since the last millennium, I currently work as a Software Quality Engineer at SUSE. I'm passionate about Open Source and firmly believe in the value of knowledge sharing.", "public_name": "Andrea Manzini", "guid": "c4f622bd-d419-5ed2-93e6-1cd1f17012fe", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/CPUZQU/"}, {"code": "FJBGDT", "name": "Ond\u0159ej Pithart", "avatar": "https://pretalx.linuxdays.cz/media/avatars/FJBGDT_PanUeE0.png", "biography": "Hi, I'm a QE engineer at SUSE, daily Linux user, network engineer at heart, car enthusiast and a general freak.", "public_name": "Ond\u0159ej Pithart", "guid": "5801965d-02ff-577d-8151-1490e1288f67", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/FJBGDT/"}], "links": [], "feedback_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/VWNAXG/feedback/", "origin_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/VWNAXG/", "attachments": []}], "111": [{"guid": "e6e7d849-77b4-57e8-bf69-fb2eb960da10", "code": "SVSBVR", "id": 478, "logo": null, "date": "2025-10-04T10:00:00+02:00", "start": "10:00", "duration": "00:20", "room": "111", "slug": "linuxdays-2025-478-icann-news", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/SVSBVR/", "title": "ICANN news", "subtitle": "", "track": "CZ.NIC", "type": "Short Talk", "language": "cs", "abstract": "Ond\u0159ej Filip", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "LKZH3N", "name": "Ond\u0159ej Filip", "avatar": null, "biography": "Ond\u0159ej Filip", "public_name": "Ond\u0159ej Filip", "guid": "f41a5b6e-a100-5900-a6c7-46e4c1532726", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/LKZH3N/"}], "links": [], "feedback_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/SVSBVR/feedback/", "origin_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/SVSBVR/", "attachments": []}, {"guid": "c67558d0-3fbb-598c-9126-833bd5e10d12", "code": "KPQJNJ", "id": 387, "logo": null, "date": "2025-10-04T10:30:00+02:00", "start": "10:30", "duration": "00:50", "room": "111", "slug": "linuxdays-2025-387-co-prinesly-aukce-cz-domen", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/KPQJNJ/", "title": "Co p\u0159inesly aukce .CZ dom\u00e9n", "subtitle": "", "track": "CZ.NIC", "type": "Short Talk", "language": "cs", "abstract": "Aukce .CZ dom\u00e9n, kter\u00e9 provozuje sdru\u017een\u00ed CZ.NIC maj\u00ed za sebou vice jak rok provozu. Je tedy mo\u017en\u00e9 zhodnotit, zda a jak do\u0161lo k napln\u011bn\u00ed o\u010dek\u00e1v\u00e1n\u00ed t\u00e9to slu\u017eby a to nejen z pohledu spr\u00e1vce n\u00e1rodn\u00ed dom\u00e9ny, ale zejm\u00e9na z pohledu koncov\u00e9ho dr\u017eitele.", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "FUZRDA", "name": "Zden\u011bk Br\u016fna", "avatar": "https://pretalx.linuxdays.cz/media/avatars/FUZRDA_RP0h8Tu.jpg", "biography": "Zden\u011bk od roku 2016 pracuje v CZ.NIC jako technick\u00fd \u0159editel, kde je zodpov\u011bdn\u00fd zejm\u00e9na za provoz a rozvoj registru dom\u00e9nov\u00fdch jmen a slu\u017eby MojeID. Ve voln\u00e9m \u010dase se v\u011bnuje rodin\u011b, cyklistice a po\u0159\u00e1d\u00e1n\u00ed orienta\u010dn\u00edch z\u00e1vod\u016f.", "public_name": "Zden\u011bk Br\u016fna", "guid": "23a15b7e-24fe-5c57-8cda-2bba98192599", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/FUZRDA/"}], "links": [], "feedback_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/KPQJNJ/feedback/", "origin_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/KPQJNJ/", "attachments": [{"title": "prezentace", "url": "/media/linuxdays-2025/submissions/KPQJNJ/resources/CZ_Domain_Auctions_L_KR0w4nB.pdf", "type": "related"}]}, {"guid": "d7e0a6d6-3e21-561c-b64e-a9434254e61b", "code": "9AZGBX", "id": 385, "logo": null, "date": "2025-10-04T11:30:00+02:00", "start": "11:30", "duration": "00:20", "room": "111", "slug": "linuxdays-2025-385-dnscheck-po-roce-provozu", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/9AZGBX/", "title": "DNScheck po roce provozu", "subtitle": "", "track": "CZ.NIC", "type": "Short Talk", "language": "cs", "abstract": "Shrneme poznatky z prvn\u00edho roku b\u011bhu DNScheck, na\u0161ich automatizovan\u00fdch kontrol NSSET\u016f a delegace dom\u00e9n, postaven\u00fdch nad syst\u00e9mem Zonemaster. Dozv\u00edte se, s jak\u00fdmi v\u00fdzvami jsme se za tu dobu setkali, jak\u00e1 zaj\u00edmav\u00e1 data jsme posb\u00edrali a co pl\u00e1nujeme do budoucna.", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "E3XR7G", "name": "Jan Mus\u00edlek", "avatar": "https://pretalx.linuxdays.cz/media/avatars/08a3919d9f7f16d31dc71ade4db10aac_FAL5tcI.jpg", "biography": "TODO", "public_name": "Jan Mus\u00edlek", "guid": "380aede4-c38f-55ca-a70a-842b725c617f", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/E3XR7G/"}], "links": [], "feedback_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/9AZGBX/feedback/", "origin_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/9AZGBX/", "attachments": [{"title": "Slidy", "url": "/media/linuxdays-2025/submissions/9AZGBX/resources/slides_hhaU4kK.pdf", "type": "related"}]}, {"guid": "19b9d675-6837-5eac-b947-9bcc8b9982c7", "code": "HWZGSY", "id": 415, "logo": null, "date": "2025-10-04T12:00:00+02:00", "start": "12:00", "duration": "00:20", "room": "111", "slug": "linuxdays-2025-415-jak-aktualizovat-website-na-djangocms-4-x", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/HWZGSY/", "title": "Jak aktualizovat website na DjangoCMS 4.x", "subtitle": "", "track": "CZ.NIC", "type": "Short Talk", "language": "cs", "abstract": "V p\u0159edn\u00e1\u0161ce se dozv\u00edte jak\u00e9 jsou novinky v editaci redak\u010dn\u00edho syst\u00e9mu. Porovn\u00e1me CMS a Django z pohledu z\u00e1vislost\u00ed. Zm\u00edn\u00edme, jak spr\u00e1vn\u011b verzovat a jak se na verze odkazovat. Pop\u00ed\u0161eme n\u00e1stroj pro konverzi. Dozv\u00edte se, co v\u0161echno je nutn\u00e9 pro aktualizaci ud\u011blat.\u00ad", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "GGCJCL", "name": "Zden\u011bk B\u00f6hm", "avatar": null, "biography": "V\u00fdvoj\u00e1\u0159 v CZ.NIC.", "public_name": "Zden\u011bk B\u00f6hm", "guid": "0a45d4f2-6891-5b30-8127-45c1e1500401", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/GGCJCL/"}], "links": [], "feedback_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/HWZGSY/feedback/", "origin_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/HWZGSY/", "attachments": []}, {"guid": "7851c89f-06a8-50ce-962b-2ec435f071d3", "code": "3BXEQN", "id": 456, "logo": null, "date": "2025-10-04T13:00:00+02:00", "start": "13:00", "duration": "00:50", "room": "111", "slug": "linuxdays-2025-456-turris-news", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/3BXEQN/", "title": "Turris News", "subtitle": "", "track": "CZ.NIC", "type": "Talk", "language": "en", "abstract": "What have we done since the last LinuxDays? How is the new OS release coming along? What about some new hardware? And what are our plans for the future? If you want to know what we have been working on and what are we going to focus on, join me for this talk either on site or via stream.", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "VKNBTZ", "name": "Michal Hru\u0161eck\u00fd", "avatar": "https://pretalx.linuxdays.cz/media/avatars/VKNBTZ_Ln1rvbe.jpg", "biography": "Long time open source fan, free time sysadmin, developer. Long time openSUSE community member, now working full-time on Turris routers.", "public_name": "Michal Hru\u0161eck\u00fd", "guid": "1edee256-6c0e-5e7a-94b8-048105db5b93", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/VKNBTZ/"}], "links": [], "feedback_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/3BXEQN/feedback/", "origin_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/3BXEQN/", "attachments": [{"title": "Slides", "url": "/media/linuxdays-2025/submissions/3BXEQN/resources/turris_news_2025_3i1niSL.pdf", "type": "related"}]}, {"guid": "f82ff27a-c7c7-51aa-8f5b-bed443824b32", "code": "8LHDNA", "id": 408, "logo": null, "date": "2025-10-04T14:00:00+02:00", "start": "14:00", "duration": "00:20", "room": "111", "slug": "linuxdays-2025-408-evropska-digitalni-penezenka-v-akci", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/8LHDNA/", "title": "Evropsk\u00e1 digit\u00e1ln\u00ed pen\u011b\u017eenka v akci", "subtitle": "", "track": "CZ.NIC", "type": "Talk", "language": "cs", "abstract": "P\u0159\u00ed\u0161t\u00ed rok bychom jako ob\u010dan\u00e9 m\u011bli od na\u0161\u00ed vl\u00e1dy dostat do ruky nejpozd\u011bji k V\u00e1noc\u016fm prvn\u00ed verzi Evropsk\u00e9 pen\u011b\u017eenky digit\u00e1ln\u00ed identity. U\u017e nyn\u00ed je ale mo\u017en\u00e9 se pod\u00edvat, jak takov\u00e9 pou\u017eit\u00ed t\u00e9to digit\u00e1ln\u00ed pen\u011b\u017eenky bude re\u00e1ln\u011b fungovat. CZ.NIC se \u00fa\u010dastnil dvoulet\u00e9ho pilotn\u00edho projektu, v jeho\u017e r\u00e1mci implementoval n\u011bkolik sc\u00e9n\u00e1\u0159\u016f vyu\u017e\u00edvaj\u00edc\u00edch pen\u011b\u017eenku. Prezentace nav\u00e1\u017ee na dva roky starou prezentaci na toto t\u00e9ma a shrne aktu\u00e1ln\u00ed stav legislativy, technick\u00fdch standard\u016f a pou\u017eiteln\u00e9ho k\u00f3du. Z\u00e1rove\u0148 prob\u011bhnou \u017eiv\u00e9 uk\u00e1zky fungov\u00e1n\u00ed digit\u00e1ln\u00ed pen\u011b\u017eenky.", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "VHXVUK", "name": "Jarom\u00edr Tal\u00ed\u0159", "avatar": null, "biography": "Technick\u00fd partner ve sdru\u017een\u00ed CZ.NIC", "public_name": "Jarom\u00edr Tal\u00ed\u0159", "guid": "552e3e40-8d2c-5834-b5f5-c6ff8bd2da8b", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/VHXVUK/"}], "links": [], "feedback_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/8LHDNA/feedback/", "origin_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/8LHDNA/", "attachments": [{"title": "Prezentace", "url": "/media/linuxdays-2025/submissions/8LHDNA/resources/LinuxDays25-EUDIW_ZRLal8a.pdf", "type": "related"}]}, {"guid": "8b23b1bd-df90-5d44-b255-5c5d5445bafe", "code": "CETHBW", "id": 405, "logo": null, "date": "2025-10-04T14:30:00+02:00", "start": "14:30", "duration": "00:15", "room": "111", "slug": "linuxdays-2025-405-datovka-v-roce-2025", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/CETHBW/", "title": "Datovka v roce 2025", "subtitle": "", "track": "CZ.NIC", "type": "Lightning Talk", "language": "cs", "abstract": "\u010cerstvou novinkou v aplikaci Datovka je p\u0159eraz\u00edtkov\u00e1n\u00ed star\u0161\u00edch zpr\u00e1v. V prezentaci shrneme aktu\u00e1ln\u00ed funkce, \u0159ekneme, jak\u00fd m\u00e1me feedback od u\u017eivatel\u016f, co ukazuj\u00ed statistiky, co nej\u010dast\u011bji \u0159e\u0161\u00ed u\u017eivatel\u00e9 za probl\u00e9my a co n\u00e1s p\u0159ekvapilo.", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "QX8XYP", "name": "Josef Chomyn", "avatar": null, "biography": ".", "public_name": "Josef Chomyn", "guid": "238e41f6-d256-5f1b-b064-c9b302f53690", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/QX8XYP/"}], "links": [], "feedback_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/CETHBW/feedback/", "origin_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/CETHBW/", "attachments": [{"title": "Datovka v roce 2025", "url": "/media/linuxdays-2025/submissions/CETHBW/resources/datovka_linuxdays202_iCS315B.pdf", "type": "related"}]}, {"guid": "e116475d-4519-5e7e-81f5-645c2627f659", "code": "ETMDFD", "id": 406, "logo": null, "date": "2025-10-04T14:45:00+02:00", "start": "14:45", "duration": "00:15", "room": "111", "slug": "linuxdays-2025-406-projekt-dns4eu", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/ETMDFD/", "title": "Projekt DNS4EU", "subtitle": "", "track": "CZ.NIC", "type": "Lightning Talk", "language": "cs", "abstract": "Aktu\u00e1ln\u00ed informace z projektu DNS4EU. Jak\u00e1 je role CZ.NIC v projektov\u00e9m konsorciu. Od \u010dervna 2025 je v provozu public resolver. Prvn\u00ed zku\u0161enosti ze strany u\u017eivatel\u016f i provozovatele.", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "QX8XYP", "name": "Josef Chomyn", "avatar": null, "biography": ".", "public_name": "Josef Chomyn", "guid": "238e41f6-d256-5f1b-b064-c9b302f53690", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/QX8XYP/"}], "links": [], "feedback_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/ETMDFD/feedback/", "origin_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/ETMDFD/", "attachments": [{"title": "Projekt DNS4EU", "url": "/media/linuxdays-2025/submissions/ETMDFD/resources/DNS4EU_na_IT25_jAwC003.pdf", "type": "related"}]}, {"guid": "128ef69a-08dc-5457-9ba1-e24a7d0b03a6", "code": "RH7LNQ", "id": 401, "logo": null, "date": "2025-10-04T15:00:00+02:00", "start": "15:00", "duration": "00:10", "room": "111", "slug": "linuxdays-2025-401-dns-patrol-projekt-bezpecne-dns-pro-kraj-vysocina", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/RH7LNQ/", "title": "DNS PATROL (projekt Bezpe\u010dn\u00e9 DNS pro Kraj Vyso\u010dina)", "subtitle": "", "track": "CZ.NIC", "type": "Lightning Talk", "language": "cs", "abstract": "Projekt Bezpe\u010dn\u00e9 DNS pro Kraj Vyso\u010dina p\u0159edstavuje modern\u00ed p\u0159\u00edstup k ochran\u011b proti DNS hrozb\u00e1m. C\u00edlem je zv\u00fd\u0161it bezpe\u010dnost a poskytnout efektivn\u00ed n\u00e1stroj pro spr\u00e1vu a monitoring DNS provozu.", "description": "Projekt Bezpe\u010dn\u00e9 DNS pro Kraj Vyso\u010dina p\u0159edstavuje modern\u00ed p\u0159\u00edstup k ochran\u011b proti DNS hrozb\u00e1m. C\u00edlem je zv\u00fd\u0161it bezpe\u010dnost a poskytnout efektivn\u00ed n\u00e1stroj pro spr\u00e1vu a monitoring DNS provozu.", "recording_license": "", "do_not_record": false, "persons": [{"code": "B3GPY8", "name": "Miroslav Hampl", "avatar": "https://pretalx.linuxdays.cz/media/avatars/B3GPY8_vbWws8e.JPG", "biography": "Business Development Manager v\u202fLaborato\u0159\u00edch CZ.NIC. Koordinuji v\u00fdvoj nov\u00fdch slu\u017eeb, propojuji odborn\u00edky z\u202fv\u00fdzkumu a v\u00fdvoje se z\u00e1kazn\u00edky a podporuji nasazov\u00e1n\u00ed bezpe\u010dn\u00fdch digit\u00e1ln\u00edch \u0159e\u0161en\u00ed. Zku\u0161enosti z\u202fIT, kybernetick\u00e9 bezpe\u010dnosti a digitalizace prom\u011b\u0148uji v\u202fprojekty s\u202fm\u011b\u0159iteln\u00fdm p\u0159\u00ednosem.", "public_name": "Miroslav Hampl", "guid": "60b9d18d-afaa-5214-8147-d09af5962113", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/B3GPY8/"}], "links": [], "feedback_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/RH7LNQ/feedback/", "origin_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/RH7LNQ/", "attachments": [{"title": "DNS PATROL", "url": "/media/linuxdays-2025/submissions/RH7LNQ/resources/CZNIC_Linux_Days_202_5orFM8q.pdf", "type": "related"}]}, {"guid": "deb1f997-6a6d-5c45-94ee-49fd23605348", "code": "A9UNFB", "id": 480, "logo": null, "date": "2025-10-04T15:10:00+02:00", "start": "15:10", "duration": "00:10", "room": "111", "slug": "linuxdays-2025-480-detekce-dns-tunelovani-pomoci-neuronove-site", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/A9UNFB/", "title": "Detekce DNS tunelov\u00e1n\u00ed pomoc\u00ed neuronov\u00e9 s\u00edt\u011b", "subtitle": "", "track": "CZ.NIC", "type": "Lightning Talk", "language": "cs", "abstract": "Behavior\u00e1ln\u00ed modul se zam\u011b\u0159uje na odhalov\u00e1n\u00ed skryt\u00fdch komunika\u010dn\u00edch kan\u00e1l\u016f zneu\u017e\u00edvaj\u00edc\u00edch DNS protokol. C\u00edlem je pomoc\u00ed neuronov\u00e9 s\u00edt\u011b detekovat anom\u00e1lie v provozu a minimalizovat riziko \u00fanik\u016f dat.", "description": "Behavior\u00e1ln\u00ed modul se zam\u011b\u0159uje na odhalov\u00e1n\u00ed skryt\u00fdch komunika\u010dn\u00edch kan\u00e1l\u016f zneu\u017e\u00edvaj\u00edc\u00edch DNS protokol. C\u00edlem je pomoc\u00ed neuronov\u00e9 s\u00edt\u011b detekovat anom\u00e1lie v provozu a minimalizovat riziko \u00fanik\u016f dat.", "recording_license": "", "do_not_record": false, "persons": [{"code": "XB9P3F", "name": "Hynek \u0160aback\u00fd", "avatar": null, "biography": "Researcher and developer at CZ.NIC labs.", "public_name": "Hynek \u0160aback\u00fd", "guid": "b89d5a50-2d89-53de-963a-884659776273", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/XB9P3F/"}], "links": [], "feedback_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/A9UNFB/feedback/", "origin_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/A9UNFB/", "attachments": [{"title": "Prezentace", "url": "/media/linuxdays-2025/submissions/A9UNFB/resources/Detekce_DNS_tunelova_GjWzfyB.pdf", "type": "related"}]}, {"guid": "ad0d93e7-9d50-5da3-8213-2eb201cb218b", "code": "ZGGHWA", "id": 392, "logo": null, "date": "2025-10-04T15:30:00+02:00", "start": "15:30", "duration": "00:20", "room": "111", "slug": "linuxdays-2025-392-novinky-v-knot-dns", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/ZGGHWA/", "title": "Novinky v Knot DNS", "subtitle": "", "track": "CZ.NIC", "type": "Short Talk", "language": "cs", "abstract": "P\u0159esto\u017ee je autoritativn\u00ed server Knot DNS vyzr\u00e1l\u00fd software, jeho v\u00fdvoj je st\u00e1le velmi aktivn\u00ed jak v oblasti nov\u00fdch funkc\u00ed, tak i v\u00fdkonov\u00fdch optimalizac\u00ed. V prezentaci budou p\u0159edstaveny nejzaj\u00edmav\u011bj\u0161\u00ed novinky z posledn\u00edch dvou let. P\u0159ij\u010fte se pod\u00edvat, zda n\u011bkter\u00e1 z nich nepom\u016f\u017eou i V\u00e1m.", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "WQLYR7", "name": "Daniel Salzman", "avatar": null, "biography": "V Laborato\u0159\u00edch sdru\u017een\u00ed CZ.NIC m\u00e1 na starosti v\u00fdvoj projektu Knot DNS.", "public_name": "Daniel Salzman", "guid": "161ddb75-aa3b-52cc-858e-955d32034c07", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/WQLYR7/"}], "links": [], "feedback_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/ZGGHWA/feedback/", "origin_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/ZGGHWA/", "attachments": [{"title": "Prezentace", "url": "/media/linuxdays-2025/submissions/ZGGHWA/resources/Linuxdays-2025-knotd_FEPZz4h.pdf", "type": "related"}]}, {"guid": "b5610f4a-04ae-504e-aba8-fe9a92ff2fe7", "code": "M3NYNQ", "id": 394, "logo": null, "date": "2025-10-04T16:00:00+02:00", "start": "16:00", "duration": "00:20", "room": "111", "slug": "linuxdays-2025-394-cisteni-mezipameti-v-knot-resolveru", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/M3NYNQ/", "title": "\u010ci\u0161t\u011bn\u00ed mezipam\u011bti v Knot Resolveru", "subtitle": "", "track": "CZ.NIC", "type": "Short Talk", "language": "cs", "abstract": "N\u00e1\u0161 rekurzivn\u00ed DNS server ukl\u00e1d\u00e1 data do sv\u00e9 mezipam\u011bti pro urychlen\u00ed budouc\u00edch odpov\u011bd\u00ed. Uk\u00e1\u017eeme, jak funguje p\u0159epracovan\u00e9 vyb\u00edr\u00e1n\u00ed z\u00e1znam\u016f k zahozen\u00ed p\u0159i nedostatku m\u00edsta, a nazna\u010d\u00edme, jak by mohl vypadat v\u00fdb\u011br expirovan\u00fdch z\u00e1znam\u016f k automatick\u00e9 aktualizaci.", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "NSYWAH", "name": "Luk\u00e1\u0161 Ondr\u00e1\u010dek", "avatar": null, "biography": "Knot Resolver developer at cz.nic labs.", "public_name": "Luk\u00e1\u0161 Ondr\u00e1\u010dek", "guid": "aee46586-2a8c-50a4-84d7-762ed77d064c", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/NSYWAH/"}], "links": [], "feedback_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/M3NYNQ/feedback/", "origin_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/M3NYNQ/", "attachments": [{"title": "Prezentace s pozn\u00e1mkami", "url": "/media/linuxdays-2025/submissions/M3NYNQ/resources/cache-gc-draft_hjb0kWC.pdf", "type": "related"}]}, {"guid": "8aa76b80-2505-56c7-9a4d-cb739e431e39", "code": "HHB33Z", "id": 380, "logo": "https://pretalx.linuxdays.cz/media/linuxdays-2025/submissions/HHB33Z/74413f22-b01f07a9_O5QTOlv.jpg", "date": "2025-10-04T16:30:00+02:00", "start": "16:30", "duration": "00:20", "room": "111", "slug": "linuxdays-2025-380-partybox-barevna-hudba-na-routeru-turris-omnia", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/HHB33Z/", "title": "Partybox / barevn\u00e1 hudba na routeru Turris Omnia", "subtitle": "", "track": "CZ.NIC", "type": "Short Talk", "language": "cs", "abstract": "Router Turris Omnia m\u016f\u017ee krom\u011b sv\u00e9 z\u00e1kladn\u00ed role plnit i mnoho jin\u00fdch \u00fakol\u016f. V r\u00e1mci p\u0159edn\u00e1\u0161ky uvid\u00edte, jak se z n\u011bj m\u016f\u017ee st\u00e1t partybox - za\u0159\u00edzen\u00ed, kter\u00e9 hraje a vizualizuje hudbu.", "description": "Turris Omnia je nejen router, ale tak\u00e9 pom\u011brn\u011b v\u00fdkonn\u00fd po\u010d\u00edta\u010d, kter\u00fd lze vyu\u017e\u00edt k cel\u00e9 \u0159ad\u011b dal\u0161\u00edch \u010dinnost\u00ed. Proto\u017ee disponuje sadou LED schopn\u00fdch sv\u00edtit v cel\u00e9m barevn\u00e9m spektru, lze ho po dopln\u011bn\u00ed zvukov\u00fdm adapt\u00e9rem pou\u017e\u00edt i jako partybox - tedy za\u0159\u00edzen\u00ed, kter\u00e9 hraje a vizualizuje hudbu. Jedna takov\u00e1 implementace vznikla v r\u00e1mci intern\u00edho hackatonu CZ.NIC. V p\u0159edn\u00e1\u0161ce se dozv\u00edte, jak na to lze j\u00edt a jak\u00fd je pak v\u00fdsledek takov\u00e9ho sna\u017een\u00ed. Uvid\u00edte a usly\u0161\u00edte i kr\u00e1tk\u00fd \"DJ track\", tedy za\u017eijete v\u0161e na vlastn\u00ed o\u010di a u\u0161i.", "recording_license": "", "do_not_record": false, "persons": [{"code": "LNV9L3", "name": "Luk\u00e1\u0161 Jel\u00ednek", "avatar": "https://pretalx.linuxdays.cz/media/avatars/lukas-jelinek_jI45Ep0.jpg", "biography": "Absolvent FEL \u010cVUT v oboru V\u00fdpo\u010detn\u00ed technika. Str\u00e1vil 5 let ve v\u00fdvoji SW pro pasivn\u00ed radioloka\u010dn\u00ed syst\u00e9my, pozd\u011bji pracoval jako IT administr\u00e1tor v kutnohorsk\u00e9 nemocnici. Od roku 2019 pracuje jako administr\u00e1tor/DevOps v projektu Turris sdru\u017een\u00ed CZ.NIC. Z\u00e1rove\u0148 se od roku 2006 v\u011bnuje r\u016fzn\u00fdch softwarov\u00fdm projekt\u016fm jako v\u00fdvoj\u00e1\u0159 a administr\u00e1tor.", "public_name": "Luk\u00e1\u0161 Jel\u00ednek", "guid": "e715c5a6-3e24-5c41-8930-125f7ca150f2", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/LNV9L3/"}], "links": [], "feedback_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/HHB33Z/feedback/", "origin_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/HHB33Z/", "attachments": [{"title": "Prezentace", "url": "/media/linuxdays-2025/submissions/HHB33Z/resources/omnia-partybox-linux_X8JL6rz.pdf", "type": "related"}]}, {"guid": "7078b77d-cc75-5ebf-9c2a-0dd55bfbbb81", "code": "TYGRYC", "id": 384, "logo": null, "date": "2025-10-04T17:00:00+02:00", "start": "17:00", "duration": "00:20", "room": "111", "slug": "linuxdays-2025-384-phishing-na-ceske-domene", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/TYGRYC/", "title": "Phishing na \u010desk\u00e9 dom\u00e9n\u011b", "subtitle": "", "track": "CZ.NIC", "type": "Short Talk", "language": "cs", "abstract": "V roce 2022 jsme zaznamenali v\u00fdznamnou phishingovou vlnu na \u010desk\u00e9 dom\u00e9n\u011b, kter\u00e1 od t\u00e9 doby nem\u011bla obdoby. Nejsp\u00ed\u0161 jsme ud\u011blali n\u011bco dob\u0159e.", "description": "Phishing napodoboval str\u00e1nky ministerstva pr\u00e1ce a soci\u00e1ln\u00edch v\u011bc\u00ed a vy\u017eadoval od u\u017eivatel\u016f p\u0159ihl\u00e1\u0161en\u00ed pouze p\u0159es BankID. Zcizen\u00e9 p\u0159ihla\u0161ovac\u00ed \u00fadaje n\u00e1sledn\u011b \u00fato\u010dn\u00edci vyu\u017e\u00edvali k p\u0159\u00edstupu k bankovn\u00edm \u00fa\u010dt\u016fm ob\u011bt\u00ed.", "recording_license": "", "do_not_record": false, "persons": [{"code": "LSCN3X", "name": "Martin Kunc", "avatar": null, "biography": "Bezpe\u010dnostn\u00ed analytik CSIRT.CZ/CZ.NIC", "public_name": "Martin Kunc", "guid": "c78e8a36-e628-5c5f-b60e-34dad28c99b7", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/LSCN3X/"}], "links": [], "feedback_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/TYGRYC/feedback/", "origin_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/TYGRYC/", "attachments": []}, {"guid": "15aadbb3-6bb0-5828-a76e-0edc40e3eb69", "code": "BMGZVB", "id": 402, "logo": "https://pretalx.linuxdays.cz/media/linuxdays-2025/submissions/BMGZVB/Post_FB_CE24_v1_dPIDTHP.jpg", "date": "2025-10-04T17:30:00+02:00", "start": "17:30", "duration": "00:20", "room": "111", "slug": "linuxdays-2025-402-proc-se-ucastnit-cyber-europe", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/BMGZVB/", "title": "Pro\u010d se \u00fa\u010dastnit Cyber Europe?", "subtitle": "", "track": "CZ.NIC", "type": "Short Talk", "language": "cs", "abstract": "Prezentace nab\u00eddne p\u0159ehled cvi\u010den\u00ed Cyber Europe 2024 a zd\u016frazn\u00ed hlavn\u00ed p\u0159\u00ednosy, kter\u00e9 \u00fa\u010dast na tomto nejv\u011bt\u0161\u00edm evropsk\u00e9m cvi\u010den\u00ed v oblasti kybernetick\u00e9 krizov\u00e9 reakce p\u0159in\u00e1\u0161\u00ed.", "description": "Cvi\u010den\u00ed kybernetick\u00e9 bezpe\u010dnosti Cyber Europe 2024 bylo zam\u011b\u0159eno na energetick\u00fd sektor. V r\u00e1mci prezentace se poslucha\u010di sezn\u00e1m\u00ed s hlavn\u00edmi c\u00edli cvi\u010den\u00ed, jejich napln\u011bn\u00edm, pr\u016fb\u011bhem i vybran\u00fdmi sc\u00e9n\u00e1\u0159i a konkr\u00e9tn\u00edmi injecty, kter\u00e9 \u00fa\u010dastn\u00edci b\u011bhem dvou dn\u016f \u0159e\u0161ili. Sou\u010d\u00e1st\u00ed bude tak\u00e9 popis zp\u016fsobu reakce a spolupr\u00e1ce jednotliv\u00fdch t\u00fdm\u016f. Na z\u00e1v\u011br bude v\u016fbec poprv\u00e9 v \u010cesku zve\u0159ejn\u011bno, na kter\u00e9 sektory se zam\u011b\u0159\u00ed nadch\u00e1zej\u00edc\u00ed ro\u010dn\u00edk v roce 2026. Z\u00e1rove\u0148 budou p\u0159edstaveny mo\u017enosti nejen registrace, ale i aktivn\u00edho zapojen\u00ed do p\u0159\u00edpravy sc\u00e9n\u00e1\u0159\u016f, nap\u0159\u00edklad pokud si budou vybran\u00e9 sektory cht\u00edt vyzkou\u0161et specifick\u00e9 typy incident\u016f relevantn\u00ed pro jejich organizaci.", "recording_license": "", "do_not_record": false, "persons": [{"code": "Z8S8DV", "name": "V\u011bra Miku\u0161ov\u00e1", "avatar": null, "biography": "V\u011bra Miku\u0161ov\u00e1 p\u016fsob\u00ed v t\u00fdmu CSIRT.CZ, kde se v\u011bnuje kybernetick\u00e9 bezpe\u010dnosti se zam\u011b\u0159en\u00edm na n\u00e1rodn\u00ed i mezin\u00e1rodn\u00ed spolupr\u00e1ci. Vystudovala Bezpe\u010dnostn\u011b-pr\u00e1vn\u00ed a bezpe\u010dnostn\u011b-strategick\u00e1 studia na Policejn\u00ed akademii \u010cR a v oblasti kybernetick\u00e9 bezpe\u010dnosti se pohybuje od roku 2015. Od roku 2023 je \u010dlenkou \u0159\u00eddic\u00edho v\u00fdboru mezin\u00e1rodn\u00ed organizace TF-CSIRT a koordinuje realizaci evropsk\u00e9ho cvi\u010den\u00ed Cyber Europe pro \u010cesko.", "public_name": "V\u011bra Miku\u0161ov\u00e1", "guid": "ef3881b8-4ba9-53fd-bf95-e4d04b1d652e", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/Z8S8DV/"}], "links": [], "feedback_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/BMGZVB/feedback/", "origin_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/BMGZVB/", "attachments": []}], "345": [{"guid": "b2522745-5c10-5d31-9fa2-5537e0accb46", "code": "V9PZSU", "id": 411, "logo": null, "date": "2025-10-04T12:30:00+02:00", "start": "12:30", "duration": "01:50", "room": "345", "slug": "linuxdays-2025-411-zaklady-ansible", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/V9PZSU/", "title": "Z\u00e1klady Ansible", "subtitle": "", "track": "Workshops", "type": "Long Workshop", "language": "cs", "abstract": "Doporu\u010dujeme: nav\u0161tivte p\u0159edn\u00e1\u0161ku Z\u00e1klad\u016f Ansible p\u0159ed workshopem v m\u00edstnosti 107 v 11:00.\r\nAutomatizovat je pot\u0159eba, proto\u017ee ru\u010dn\u00ed pr\u00e1ce n\u00e1s nebav\u00ed. Proto v\u00e1s sezn\u00e1m\u00edme se Ansiblem, jeho ekosyst\u00e9mem a rovnou za\u010dneme psan\u00edm prvn\u00edch automatiza\u010dn\u00edch task\u016f. Probereme z\u00e1kladn\u00ed principy jako jsou playbooky, role a variables, kter\u00e9 si rovnou na m\u00edst\u011b vyzkou\u0161\u00edte formou p\u0159ipraven\u00fdch \u00fakol\u016f.", "description": "Workshop je ur\u010den pro za\u010d\u00e1te\u010dn\u00edky, ale i ty, kte\u0159\u00ed si cht\u011bj\u00ed osv\u011b\u017eit Ansible a jeho principy od za\u010d\u00e1tku. B\u011bhem necel\u00fdch dvou hodin v\u00e1s dostaneme do obrazu tak, abyste mohli za\u010d\u00edt automatizovat v\u0161echny b\u011b\u017en\u00e9 \u010dinnosti spojen\u00e9 s konfigurac\u00ed a nasazen\u00edm \u2013 a\u0165 u\u017e m\u00e1te jedno RPi, nebo cel\u00fd podnikov\u00fd cluster.", "recording_license": "", "do_not_record": false, "persons": [{"code": "WTVC8Y", "name": "Radim Lipov\u010dan", "avatar": "https://pretalx.linuxdays.cz/media/avatars/daab12ff0be02d8d41fb08c01ffa5ba5_KLIfnJj.jpg", "biography": null, "public_name": "Radim Lipov\u010dan", "guid": "29cf638a-67a9-56db-a94d-60eb64edc3a3", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/WTVC8Y/"}, {"code": "FAVDKS", "name": "Petr Krch", "avatar": "https://pretalx.linuxdays.cz/media/avatars/6I3A30693_kMjx2xk.JPG", "biography": "V\u00edc ne\u017e 12 let za\u017e\u00edv\u00e1m dobrodru\u017estv\u00ed v provozu Seznam.cz", "public_name": "Petr Krch", "guid": "6e8aed91-0a68-5dc2-99df-c6dc408ede59", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/FAVDKS/"}], "links": [], "feedback_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/V9PZSU/feedback/", "origin_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/V9PZSU/", "attachments": [{"title": "Slides", "url": "/media/linuxdays-2025/submissions/V9PZSU/resources/workshop_Q8XsT3D.pdf", "type": "related"}]}, {"guid": "62e56504-6ba8-52d2-aa37-20a6d1d348ff", "code": "YPCXBG", "id": 442, "logo": null, "date": "2025-10-04T16:30:00+02:00", "start": "16:30", "duration": "00:50", "room": "345", "slug": "linuxdays-2025-442-fine-tuning-llms-on-a-budget", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/YPCXBG/", "title": "Fine tuning LLMs on a budget", "subtitle": "", "track": "Workshops", "type": "Workshop", "language": "en", "abstract": "In this workshop, attendees will learn how to fine tune LLMs on minimal hardware, even without GPU.\r\n\r\nWith a simple script, built around Huggingface libraries, and a connection to an existing LLM server, it is possible to bootstrap the fine tuning process and achieve interesting results.", "description": "Since the release of ChatGPT, usage of LLMs has exploded across all sections of society.\r\n\r\nHowever, the process of creating an LLM or even adjusting one to a specific use case, has remained an obscure matter, even to those who are experts in other areas of our field.\r\n\r\nThis workshop will guide attendees in how to use open source software to take an existing model, and fine tune it with a domain specific knowledge.\r\n\r\nAttendees will have an opportunity to:\r\n\r\n1. (Optional) Building question and answers dataset from documents, using API of existing LLM service.\r\n2. Using parameter efficient fine tuning to instill new knowledge into the model.", "recording_license": "", "do_not_record": false, "persons": [{"code": "UUWXCN", "name": "Jiri Podivin", "avatar": "https://pretalx.linuxdays.cz/media/avatars/1696625003070_robbzNi.jpg", "biography": "I have been interested in AI for a long time and have worked on language model applications before, although not the \"large\" ones.\r\n\r\nI have been working as an engineer at Red Hat on the Openstack project for the last four years, and recently I have joined Log Detective. I also collaborate with Mendel University on projects on agricultural automation and plant diagnostics using acoustic emission.\r\n\r\nIn my free time I am a fan of museums, obscure literature and strategy games.\r\n\r\n---\r\n\r\nDlouho se zaj\u00edm\u00e1m o AI a u\u017e d\u0159\u00edve jsem pracoval na aplikac\u00edch jazykov\u00fdch model\u016f, by\u0165 ne t\u011bch \"velk\u00fdch\".\r\n\r\nPosledn\u00ed \u010dty\u0159i roky pracuju jak in\u017een\u00fdr v Red Hatu na projektu Openstack, a ned\u00e1vno jsem p\u0159ibral Log Detective. Tak\u00e9 spolupracuji s Mendelovou univerzitou na projektech automatizace zem\u011bd\u011blstv\u00ed a diagnostiky rostlin pomoc\u00ed akustick\u00e9 emise.\r\n\r\nVe voln\u00e9 \u010dase jsem p\u0159\u00edznivcem muze\u00ed, obskurn\u00ed literatury a strategick\u00fdch her.", "public_name": "Jiri Podivin", "guid": "0c224323-68b7-5178-af4a-9e82e6fa7ecc", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/UUWXCN/"}], "links": [{"title": "Repository with source for the workshop", "url": "https://github.com/jpodivin/linuxdays2025workshop", "type": "related"}], "feedback_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/YPCXBG/feedback/", "origin_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/YPCXBG/", "attachments": [{"title": "Archive of repository we will use during the workshop", "url": "/media/linuxdays-2025/submissions/YPCXBG/resources/finetuning_oXmjrI3.tar", "type": "related"}, {"title": "Sample dataset for demonstration purposes", "url": "/media/linuxdays-2025/submissions/YPCXBG/resources/qna.parquet_VjT4XSo.sample", "type": "related"}, {"title": "Slides with introductory theory", "url": "/media/linuxdays-2025/submissions/YPCXBG/resources/finetuningllms_TarQkhN.odp", "type": "related"}]}]}}, {"index": 2, "date": "2025-10-05", "day_start": "2025-10-05T04:00:00+02:00", "day_end": "2025-10-06T03:59:00+02:00", "rooms": {"105": [{"guid": "67d75b6d-aa00-5a84-88b3-8bd1aad17f2d", "code": "HQEW7J", "id": 448, "logo": null, "date": "2025-10-05T10:00:00+02:00", "start": "10:00", "duration": "00:50", "room": "105", "slug": "linuxdays-2025-448-odkud-se-berou-ip-adresy", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/HQEW7J/", "title": "Odkud se berou IP adresy?", "subtitle": "", "track": null, "type": "Talk", "language": "cs", "abstract": "Aby mohl internet fungovat, mus\u00ed m\u00edt v\u0161echna za\u0159\u00edzen\u00ed k n\u011bmu p\u0159ipojen\u00e1 unik\u00e1tn\u00ed IP adresu. Obvykle ji z\u00edskaj\u00ed od p\u0159\u00edslu\u0161n\u00e9ho poskytovatele p\u0159\u00edstupu k internetu, kter\u00fd adresy zase z\u00edsk\u00e1 od jednoho z p\u011bti region\u00e1ln\u00edch internetov\u00fdch registr\u016f. Ty maj\u00ed ka\u017ed\u00fd sv\u00e1 pravidla pro p\u0159id\u011blov\u00e1n\u00ed a pou\u017e\u00edv\u00e1n\u00ed adres jak poskytovatel\u016fm p\u0159\u00edstupu k internetu, tak i p\u0159\u00edmo koncov\u00fdm u\u017eivatel\u016fm. Vzhledem k vy\u010derp\u00e1n\u00ed z\u00e1sob IPv4 adres tyto registry posledn\u00ed dobou p\u0159edev\u0161\u00edm administruj\u00ed p\u0159evody adres mezi jednotliv\u00fdmi dr\u017eiteli. V p\u0159edn\u00e1\u0161ce se pod\u00edv\u00e1me na to, jak funguje registr RIPE NCC, jak\u00e1 pravidla plat\u00ed a jak se daj\u00ed p\u0159\u00edpadn\u011b zm\u011bnit.", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "X9ZXTX", "name": "Ond\u0159ej Caletka", "avatar": "https://pretalx.linuxdays.cz/media/avatars/2e1eff9a5575fecdbedd6fc76193a645_FSWtses.jpg", "biography": "Ond\u0159ej Caletka vystudoval elektrotechnickou fakultu \u010cVUT, obor Telekomunika\u010dn\u00ed technika a po v\u00edce ne\u017e osmi letech ve sdru\u017een\u00ed CESNET, provozuj\u00edc\u00edm n\u00e1rodn\u00ed s\u00ed\u0165 v\u011bdy a v\u00fdzkumu, nyn\u00ed pracuje ve vzd\u011bl\u00e1vac\u00edm odd\u011blen\u00ed RIPE NCC, asociace koordinuj\u00edc\u00ed internetov\u00e9 s\u00edt\u011b v Evrop\u011b, na Bl\u00edzk\u00e9m v\u00fdchod\u011b a v severn\u00ed Asii.", "public_name": "Ond\u0159ej Caletka", "guid": "81314713-892d-548e-bf19-47e842a644db", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/X9ZXTX/"}], "links": [], "feedback_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/HQEW7J/feedback/", "origin_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/HQEW7J/", "attachments": [{"title": "prezentace", "url": "/media/linuxdays-2025/submissions/HQEW7J/resources/Odkud_se_berou_IP_ad_QnkfrbE.pdf", "type": "related"}]}, {"guid": "98448f2a-4c99-5465-907f-bc0dafa74b50", "code": "YENQCY", "id": 441, "logo": "https://pretalx.linuxdays.cz/media/linuxdays-2025/submissions/YENQCY/Vintage_pocitacova_stanice_s_m_dvLdJSr.png", "date": "2025-10-05T11:00:00+02:00", "start": "11:00", "duration": "00:50", "room": "105", "slug": "linuxdays-2025-441-retro-okenko-vytacime-pripojeni-k-internetu", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/YENQCY/", "title": "Retro ok\u00e9nko: Vyt\u00e1\u010d\u00edme p\u0159ipojen\u00ed k internetu", "subtitle": "", "track": null, "type": "Talk", "language": "cs", "abstract": "V dob\u00e1ch d\u00e1vno zapomenut\u00fdch jsme nebyli on-line v\u017edy a v\u0161ude. P\u0159ipojen\u00ed jsme **vyt\u00e1\u010deli** \ud83d\udd22, na spojen\u00ed \u010dekali i **dlouh\u00e9 minuty** \u23f3, platili jsme **za impulsy** \u23f2\ufe0f, a \u010dasto netrp\u011bliv\u011b \u010dekali, ne\u017e odbije sedm\u00e1 hodina ve\u010dern\u00ed \ud83d\udd56. A pokud n\u011bkdo zvedl sluch\u00e1tko \ud83d\udcde telefonu \u260e\ufe0f, museli jsme vyt\u00e1\u010det znovu \ud83e\udd26\ud83c\udffb\u200d\u2642\ufe0f. Kv\u016fli _vyt\u00e1\u010den\u00e9mu p\u0159ipojen\u00ed_ dokonce prob\u00edhaly demonstrace\ud83e\udea7! A to v\u0161e kv\u016fli p\u00e1r des\u00edtk\u00e1m kilobit\u016f za sekundu. \ud83e\udd72\r\n\r\nP\u0159ij\u010fte se pono\u0159it do dob d\u00e1vno minul\u00fdch, kdy u n\u00e1s bylo popul\u00e1rn\u00ed vyt\u00e1\u010den\u00e9 p\u0159ipojen\u00ed: p\u0159ipomeneme si historii, osah\u00e1me analogov\u00e9 modemy, a uk\u00e1\u017eeme si, jak si retro prost\u0159ed\u00ed s vyt\u00e1\u010den\u00fdm p\u0159ipojen\u00edm vyrobit v Linuxu \ud83d\udc27. Na\u017eivo za\u017eijete i zvuky modem\u016f b\u011bhem vyt\u00e1\u010den\u00ed p\u0159ipojen\u00ed \ud83d\udd0a!", "description": "P\u0159ij\u010fte se pono\u0159it do dob d\u00e1vno minul\u00fdch, kdy u n\u00e1s bylo popul\u00e1rn\u00ed vyt\u00e1\u010den\u00e9 p\u0159ipojen\u00ed: p\u0159ipomeneme si historii, osah\u00e1me analogov\u00e9 modemy, a uk\u00e1\u017eeme si, jak si retro prost\u0159ed\u00ed s vyt\u00e1\u010den\u00fdm p\u0159ipojen\u00edm vyrobit v Linuxu \ud83d\udc27. Na\u017eivo za\u017eijete i zvuky modem\u016f b\u011bhem vyt\u00e1\u010den\u00ed p\u0159ipojen\u00ed \ud83d\udd0a!", "recording_license": "", "do_not_record": false, "persons": [{"code": "LWTABH", "name": "Radek Zaj\u00edc", "avatar": "https://pretalx.linuxdays.cz/media/zajdee_pic.jpg", "biography": "U\u017e v\u00edc ne\u017e \u010dtvrt stolet\u00ed rozb\u00edj\u00edm po\u010d\u00edta\u010de a s\u00edt\u011b a zat\u00edm si toho t\u00e9m\u011b\u0159 nikdo* nev\u0161iml.", "public_name": "Radek Zaj\u00edc", "guid": "f3d14f79-a59d-5b46-80b3-25dbf568cf32", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/LWTABH/"}], "links": [], "feedback_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/YENQCY/feedback/", "origin_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/YENQCY/", "attachments": [{"title": "Prezentace", "url": "/media/linuxdays-2025/submissions/YENQCY/resources/2025-10-05-linux-day_FseX5bp.pdf", "type": "related"}]}, {"guid": "66dcdcc1-c224-5465-b735-fbb458087f3c", "code": "P7XWGJ", "id": 472, "logo": null, "date": "2025-10-05T12:00:00+02:00", "start": "12:00", "duration": "00:20", "room": "105", "slug": "linuxdays-2025-472-jak-zacit-s-domaci-automatizaci-v-home-assistantu", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/P7XWGJ/", "title": "Jak za\u010d\u00edt s dom\u00e1c\u00ed automatizac\u00ed v Home Assistantu", "subtitle": "", "track": null, "type": "Short Talk", "language": "cs", "abstract": "L\u00e1k\u00e1 v\u00e1s chytr\u00e1 dom\u00e1cnost ale odrazuj\u00ed v\u00e1s uzav\u0159en\u00e9 ekosyst\u00e9my a ciz\u00ed cloudy? Uk\u00e1\u017eu V\u00e1m jak nasadit Home Assistant, jak\u00e9 integrace jsou k dispozici a na z\u00e1v\u011br p\u00e1r p\u0159\u00edklad\u016f z praxe.", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "WCW9RH", "name": "Pavel Dost\u00e1l", "avatar": "https://pretalx.linuxdays.cz/media/avatars/WCW9RH_pasxy0t.jpg", "biography": "Pracuji jako QA v SUSE a pom\u00e1h\u00e1m s infrastrukturou na Strahov\u011b v klubu Silicon Hill.", "public_name": "Pavel Dost\u00e1l", "guid": "781d6296-8f1f-59dc-b4cb-5165687fac52", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/WCW9RH/"}, {"code": "FJBGDT", "name": "Ond\u0159ej Pithart", "avatar": "https://pretalx.linuxdays.cz/media/avatars/FJBGDT_PanUeE0.png", "biography": "Hi, I'm a QE engineer at SUSE, daily Linux user, network engineer at heart, car enthusiast and a general freak.", "public_name": "Ond\u0159ej Pithart", "guid": "5801965d-02ff-577d-8151-1490e1288f67", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/FJBGDT/"}], "links": [], "feedback_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/P7XWGJ/feedback/", "origin_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/P7XWGJ/", "attachments": [{"title": "PDF export p\u0159edn\u00e1\u0161ky", "url": "/media/linuxdays-2025/submissions/P7XWGJ/resources/Home_Assistant_LY34gUo.pdf", "type": "related"}]}, {"guid": "d5c82ac2-1ded-5b19-830d-1203203d8a55", "code": "RYZUML", "id": 431, "logo": null, "date": "2025-10-05T12:30:00+02:00", "start": "12:30", "duration": "00:20", "room": "105", "slug": "linuxdays-2025-431-hodne-zle-a-osklive-syscally-v-linuxu", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/RYZUML/", "title": "Hodn\u00e9, zl\u00e9 a o\u0161kliv\u00e9 syscally v Linuxu", "subtitle": "", "track": null, "type": "Short Talk", "language": "cs", "abstract": "Linuxov\u00e1 tabulka syscall\u016f m\u00e1 t. \u010d. p\u0159es 400 z\u00e1znam\u016f. \u0158ekl jsem si, \u017ee si ji projdu a vyberu r\u016fzn\u00e9 rudimenty jako odstra\u0161uj\u00edc\u00ed p\u0159\u00edklady (a z\u00e1rove\u0148 pouk\u00e1z\u00e1n\u00ed na \"do no break userspace\"). P\u0159itom jsem vypozoroval i vzorce, kde se API vyvinulo do nov\u011bj\u0161\u00ed a trvalej\u0161\u00ed formy (kter\u00e1 stoj\u00ed za osv\u011btu). Mo\u017en\u00e1 si si odtud odnesou n\u011bco i u\u017eivatel\u00e9 nebo tv\u016frci jin\u00fdch API ne\u017e toho kernelov\u00e9ho.", "description": "\u00dapln\u00fd a \u0161irok\u00fd v\u00fdklad Linuxov\u00e9ho API poskytuje kn\u00ed\u017eka [The Linux Programming Interface](https://www.man7.org/tlpi/) od Michaela Kerriska. Div\u00e1k\u016fm ji doporu\u010duji, a\u010dkoli z n\u00ed tento talk p\u0159\u00edmo nevych\u00e1z\u00ed.", "recording_license": "", "do_not_record": false, "persons": [{"code": "BKV9EA", "name": "Michal Koutn\u00fd", "avatar": "https://pretalx.linuxdays.cz/media/avatars/630751_pcLuUiF.png", "biography": "Pracuji v SUSE, v\u011bnuji se control group\u00e1m v kernelu, v systemd. (Cgroups = ta \u010d\u00e1st kontejner\u016f, co nen\u00ed namespace.)", "public_name": "Michal Koutn\u00fd", "guid": "b85e71f8-0ec4-5d30-bc5f-c5afb027637d", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/BKV9EA/"}], "links": [], "feedback_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/RYZUML/feedback/", "origin_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/RYZUML/", "attachments": [{"title": "HZO syscally", "url": "/media/linuxdays-2025/submissions/RYZUML/resources/Hodne_zle_a_osklive_xfq3sEU.pdf", "type": "related"}]}, {"guid": "5b2b367f-a8d4-5881-a098-5a34ed7f018d", "code": "SU7CEJ", "id": 400, "logo": null, "date": "2025-10-05T13:00:00+02:00", "start": "13:00", "duration": "00:50", "room": "105", "slug": "linuxdays-2025-400-kubernetes-pro-dinosaury", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/SU7CEJ/", "title": "Kubernetes pro dinosaury", "subtitle": "", "track": null, "type": "Talk", "language": "cs", "abstract": "Kubernetes je v posledn\u00edch letech jedn\u00edm z nejsklo\u0148ovan\u011bj\u0161\u00edch pojm\u016f ve sv\u011bt\u011b IT infrastruktury. Po 25 letech spr\u00e1vy Linuxu a t\u0159ech letech pr\u00e1ce s Kubernetes v\u00e1m chci nab\u00eddnout pohled zku\u0161en\u00e9ho admina, kter\u00fd pro\u0161el od klasick\u00fdch server\u016f a\u017e po modern\u00ed kontejnerov\u00e9 orchestrace. \r\nP\u0159edn\u00e1\u0161ka objasn\u00ed, co Kubernetes je, jak\u00e9 probl\u00e9my dok\u00e1\u017ee vy\u0159e\u0161it, a pro\u010d m\u00e1 smysl jeho nasazen\u00ed i pro ost\u0159\u00edlen\u00e9 linuxov\u00e9 spr\u00e1vce. Uk\u00e1\u017eeme si, pro\u010d u\u017e nesta\u010d\u00ed z\u016fstat jen u Ansible nebo Dockeru, a jak\u00e9 v\u00fdhody Kubernetes p\u0159in\u00e1\u0161\u00ed oproti spr\u00e1v\u011b tradi\u010dn\u00edch server\u016f.\r\nSou\u010dasn\u011b se budu sna\u017eit, aby si na sv\u00e9 p\u0159i\u0161li i nov\u00e1\u010dci, kte\u0159\u00ed se s Linuxem teprve seznamuj\u00ed. Znalost architektury a spr\u00e1va Linuxu m\u00e1 st\u00e1le velk\u00fd v\u00fdznam \u2013 a pr\u00e1v\u011b pevn\u00e9 z\u00e1klady umo\u017en\u00ed efektivn\u011bji pracovat v Kubernetes.", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "RMLPMV", "name": "Jan Tom\u00e1\u0161ek", "avatar": "https://pretalx.linuxdays.cz/media/avatars/128704910_3329078647219457_4871527186040070537_n_gXktIhW.jpg", "biography": "Od ml\u00e1d\u00ed m\u011b zaj\u00edm\u00e1 elektronika a p\u0159edev\u0161\u00edm po\u010d\u00edta\u010de. Na vysok\u00e9 \u0161kole jsem propadl Linuxu a OpenSource, jsem p\u0159esv\u011bd\u010den\u00fd, \u017ee otev\u0159enost je ta spr\u00e1vn\u00e1 cesta, kterou by se IT pr\u016fmysl m\u011bl ub\u00edrat. Za\u017eil jsem za\u010d\u00e1tky Internetu v \u010cR a do dne\u0161n\u00edch dn\u016f m\u011b jeho mo\u017enosti nep\u0159est\u00e1vaj\u00ed fascinovat.\r\n\r\nJsem admin linuxov\u00fdch server\u016f a p\u0159\u00edle\u017eitostn\u00fd v\u00fdvoj\u00e1\u0159. Nov\u011b se tomu pr\u00fd \u0159\u00edk\u00e1 Platform Engineer.", "public_name": "Jan Tom\u00e1\u0161ek", "guid": "042b8322-461a-5b66-b7d1-32df9683e236", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/RMLPMV/"}], "links": [{"title": "Kubernetes pro dinosaury", "url": "https://github.com/semik/LinuxDays2025/blob/develop/prezentace/Kubernetes4Dinosaurs.pdf", "type": "related"}], "feedback_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/SU7CEJ/feedback/", "origin_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/SU7CEJ/", "attachments": []}, {"guid": "c846b8d7-d732-52d5-93d8-691dc9647566", "code": "U7KV9Y", "id": 375, "logo": null, "date": "2025-10-05T14:00:00+02:00", "start": "14:00", "duration": "00:50", "room": "105", "slug": "linuxdays-2025-375-postkvantova-kryptografie-prakticky-rok-pote", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/U7KV9Y/", "title": "Postkvantov\u00e1 kryptografie prakticky: rok pot\u00e9", "subtitle": "", "track": null, "type": "Talk", "language": "cs", "abstract": "Postkvantov\u00e1 kryptografie nen\u00ed hudbou vzd\u00e1len\u00e9 budoucnosti, velk\u00e1 \u010d\u00e1st provozu dne\u0161n\u00edho internetu je ji\u017e zabezpe\u010dena nov\u00fdmi kvantov\u011b odoln\u00fdmi algoritmy. P\u0159edn\u00e1\u0161ka nav\u00e1\u017ee na p\u0159edn\u00e1\u0161ku z p\u0159edchoz\u00edho roku a uk\u00e1\u017ee pokrok v zav\u00e1d\u011bn\u00ed nov\u00fdch kryptografick\u00fdch algoritm\u016f a takt\u00e9\u017e jak zapnout modern\u00ed algoritmy i na va\u0161em webov\u00e9m serveru.", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "VSSXUG", "name": "Jakub Onderka", "avatar": null, "biography": "Jakub Onderka je \u010dlenem jednotky GovCERT.CZ, sou\u010d\u00e1st N\u00e1rodn\u00edho \u00fa\u0159adu pro kybernetickou a informa\u010dn\u00ed bezpe\u010dnost, kter\u00e1 \u0159e\u0161\u00ed nejv\u00fdznamn\u011bj\u0161\u00ed \u00fatoky na \u010deskou kritickou informa\u010dn\u00ed infrastrukturu. Zab\u00fdv\u00e1 se v\u00fdvojem v jazyce Rust a Python a praktickou aplikac\u00ed bezpe\u010dnostn\u00edch n\u00e1stroj\u016f a postkvantov\u00e9 kryptografie.", "public_name": "Jakub Onderka", "guid": "f436301f-5949-55eb-b0f5-dbdcba3213b5", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/VSSXUG/"}], "links": [], "feedback_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/U7KV9Y/feedback/", "origin_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/U7KV9Y/", "attachments": [{"title": "Prezentace", "url": "/media/linuxdays-2025/submissions/U7KV9Y/resources/LinuxDays_2025_PQC_QBpHQtY.pdf", "type": "related"}]}, {"guid": "571f2ba0-ec9d-589b-ba68-e75d0054ffe0", "code": "7FUBFU", "id": 418, "logo": null, "date": "2025-10-05T15:00:00+02:00", "start": "15:00", "duration": "00:50", "room": "105", "slug": "linuxdays-2025-418-vliv-planetarni-plasticity-na-zavody-koni-a-kernel", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/7FUBFU/", "title": "Vliv planet\u00e1rn\u00ed plasticity na z\u00e1vody kon\u00ed a Kernel", "subtitle": "", "track": null, "type": "Talk", "language": "cs", "abstract": "P\u0159edn\u00e1\u0161ka rozebere jak souvis\u00ed deformace planety Zem\u011b s p\u0159esn\u00fdm m\u011b\u0159en\u00edm \u010dasu, p\u0159estupn\u00fdmi sekundami, chybou v Linuxov\u00e9m j\u00e1d\u0159e, \u0161patnou architekturou n\u011bkter\u00fdch Javov\u00fdch projekt\u016f a\u017e k rozs\u00e1hl\u00e9mu v\u00fdpadku internetov\u00fdch slu\u017eeb v roce 2012.", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "J7AEXT", "name": "Vojt\u011bch Pavl\u00edk", "avatar": "https://pretalx.linuxdays.cz/media/avatars/J7AEXT_eWkvnfy.jpg", "biography": "Vojt\u011bch pracuje v SUSE na Linuxu ji\u017e 26 let, ze za\u010d\u00e1tku jako kernelov\u00fd v\u00fdvoj\u00e1\u0159, pozd\u011bji v r\u016fzn\u00fdch mana\u017eersk\u00fdch rol\u00edch. Jednu dobu vedl celou Linuxovou divizi SUSE. Napsal pro Linuxov\u00e9 j\u00e1dro vrstvu pro zpracov\u00e1n\u00ed vstupn\u00edch za\u0159\u00edzen\u00ed, spolupracoval na v\u00fdvoji MOK pro SecureBoot, na Livepatchingu pro Linuxov\u00e9 j\u00e1dro a dal\u0161\u00edch projektech. Mimo pr\u00e1ci te\u010f v\u011bnuje \u010das rekonstrukci historick\u00e9 vodn\u00ed elektr\u00e1rny.", "public_name": "Vojt\u011bch Pavl\u00edk", "guid": "bf52d211-bf38-5f0d-8c34-2112b6c709df", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/J7AEXT/"}], "links": [], "feedback_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/7FUBFU/feedback/", "origin_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/7FUBFU/", "attachments": []}, {"guid": "09e8f7b8-8cf5-58a8-826d-198a56bee246", "code": "N7GHT7", "id": 371, "logo": null, "date": "2025-10-05T16:00:00+02:00", "start": "16:00", "duration": "00:20", "room": "105", "slug": "linuxdays-2025-371-programujeme-autobus", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/N7GHT7/", "title": "Programujeme autobus", "subtitle": "", "track": null, "type": "Short Talk", "language": "cs", "abstract": "Minule jsme Hackovali autobus, te\u010f ho budeme programovat. N\u00e1zorn\u00e9 uk\u00e1zky jak se programuj\u00ed BUSE panely v autobuse. Co v\u0161e jde naprogramovat a zobrazit, jak se jednotliv\u00e9 panely li\u0161\u00ed. Co zvl\u00e1daj\u00ed vnit\u0159n\u00ed a co vn\u011bj\u0161\u00ed panely.", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "LAPSX8", "name": "Tom\u00e1\u0161 Tich\u00fd", "avatar": "https://pretalx.linuxdays.cz/media/2oUcw96__400x400.jpg", "biography": "\u0158iditel autobusu Karosa, IT nad\u0161enec a ob\u010dasn\u00fd polovodi\u010d. Sb\u011bratel nejr\u016fzn\u011bj\u0161\u00edch cedulek MHD, kalkula\u010dek a chameleon\u016f.", "public_name": "Tom\u00e1\u0161 Tich\u00fd", "guid": "6f9595f9-e26a-525d-9598-14ee879fabbf", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/LAPSX8/"}], "links": [{"title": "Prezentace", "url": "https://tichytom.cz/prez/tichyt_LinuxDays25.pdf", "type": "related"}], "feedback_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/N7GHT7/feedback/", "origin_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/N7GHT7/", "attachments": []}], "155": [{"guid": "7de6383f-d34f-573a-b3ae-bcf3d24989f6", "code": "R3RDNK", "id": 464, "logo": null, "date": "2025-10-05T10:30:00+02:00", "start": "10:30", "duration": "00:20", "room": "155", "slug": "linuxdays-2025-464-overlay-networking-for-low-cost-self-hosting", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/R3RDNK/", "title": "Overlay networking for low-cost self-hosting", "subtitle": "", "track": null, "type": "Short Talk", "language": "cs", "abstract": "Running your own software can get expensive in the cloud, but doing it at home often means dealing with tricky network configurations. This talk shows you how to get the best of both worlds: running services on cheap, local hardware with the some of the simplicity of a cloud deployment.\r\n\r\nWe'll explore a practical setup using an overlay network. I'll demonstrate how this category of technology\u2014which includes tools like Tailscale, Netmaker, ZeroTier, and Nebula\u2014lets your server move between physical locations and stay securely connected, all without needing static IPs, complex firewall rules, or touching your network configuration at all.", "description": "This is a guide for pragmatic self-hosting. Forget over-engineered solutions for big server racks; I'll show you my minimalist, low-maintenance setup designed to be portable. If you want to spend less time managing your networking infrastructure and more time using it, especially when you move, then this talk is for you.", "recording_license": "", "do_not_record": false, "persons": [{"code": "AE7P38", "name": "Va\u0161ek \u0160raier", "avatar": "https://pretalx.linuxdays.cz/media/avatars/AE7P38_bPnCbWI.jpg", "biography": "Linux\u00e1k, matfyz\u00e1k, organiz\u00e1tor Protabu (protab.cz), ...\r\n\r\nHrozn\u011b moc jsem se nau\u010dil t\u00edm, \u017ee si provozuju dom\u00e1c\u00ed server. V\u011bt\u0161inou do n\u011bj nechci investovat moc pen\u011bz, tak\u017ee jsem m\u00edsto toho tr\u00e1vil spoustu \u010dasu vym\u00fd\u0161len\u00edm, jak vyj\u00edt s n\u00e1hodn\u00fdmi kusy \u017eeleza, co jsem n\u011bkde sehnal. A\u010d doba, kdy jsem se sna\u017eil provozovat spolehliv\u00fd web server na p\u0159eflashovan\u00e9m ARMov\u00e9m tabletu s Arch Linuxem je d\u00e1vno pry\u010d, st\u00e1le si s homelabem r\u00e1d hraju.\r\n\r\n\u017div\u00edm se v\u00fdvojem softwaru, jsem zam\u011b\u0159en\u00fd na infrastrukturu a bezpe\u010dnost. Aktu\u00e1ln\u011b pracuji pro Pure Storage.", "public_name": "Va\u0161ek \u0160raier", "guid": "44535741-1eca-570a-9719-f908447aa3a2", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/AE7P38/"}], "links": [], "feedback_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/R3RDNK/feedback/", "origin_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/R3RDNK/", "attachments": [{"title": "Slidy", "url": "/media/linuxdays-2025/submissions/R3RDNK/resources/linuxdays_4wZsLDf.pdf", "type": "related"}]}, {"guid": "4b03777e-ebb4-5f17-a978-6d29aee893f6", "code": "X9HTWN", "id": 427, "logo": null, "date": "2025-10-05T11:00:00+02:00", "start": "11:00", "duration": "00:50", "room": "155", "slug": "linuxdays-2025-427-nefunguje-internet-jak-najit-pricinu-vypadku-pripojeni", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/X9HTWN/", "title": "Nefunguje internet: jak naj\u00edt p\u0159\u00ed\u010dinu v\u00fdpadku p\u0159ipojen\u00ed", "subtitle": "", "track": null, "type": "Talk", "language": "cs", "abstract": "Praktick\u00fd n\u00e1vod pro ka\u017ed\u00e9ho, kdo se setk\u00e1 s v\u00fdpadkem p\u0159ipojen\u00ed. P\u0159edn\u00e1\u0161ka nab\u00eddne jednoduch\u00fd p\u0159ehled funkc\u00ed dom\u00e1c\u00ed s\u00edt\u011b a n\u00e1sledn\u00e9 kroky pot\u0159ebn\u00e9 k diagnostice probl\u00e9m\u016f. Ty v\u00e1m pomohou odhalit p\u0159\u00ed\u010dinu probl\u00e9m\u016f d\u0159\u00edv, ne\u017e budete volat poskytovateli.", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "3NCLAN", "name": "Petr Kr\u010dm\u00e1\u0159", "avatar": "https://pretalx.linuxdays.cz/media/Petr_Krcmar.jpg", "biography": "Petr Kr\u010dm\u00e1\u0159 pracuje jako \u0161\u00e9fredaktor serveru Root.cz, spr\u00e1vce server\u016f a \u0161kolitel linuxov\u00fdch technologi\u00ed. Linuxem a unixov\u00fdmi syst\u00e9my se zab\u00fdv\u00e1 t\u00e9m\u011b\u0159 t\u0159i dek\u00e1dy, bav\u00ed ho servery, informa\u010dn\u00ed bezpe\u010dnost a internetov\u00e9 technologie.", "public_name": "Petr Kr\u010dm\u00e1\u0159", "guid": "61e2bfd4-2337-54bc-9ee2-b34ed543256e", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/3NCLAN/"}], "links": [], "feedback_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/X9HTWN/feedback/", "origin_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/X9HTWN/", "attachments": [{"title": "prezentace", "url": "/media/linuxdays-2025/submissions/X9HTWN/resources/nefunguje_internet_DfIaw7i.pdf", "type": "related"}]}, {"guid": "0a50b125-1c89-51fb-bba7-29fabef6e8d3", "code": "Y7TNRL", "id": 376, "logo": null, "date": "2025-10-05T12:00:00+02:00", "start": "12:00", "duration": "00:50", "room": "155", "slug": "linuxdays-2025-376-moderni-logovani-vector-a-ecs", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/Y7TNRL/", "title": "Modern\u00ed logov\u00e1n\u00ed: Vector a ECS", "subtitle": "", "track": null, "type": "Talk", "language": "cs", "abstract": "Vector je modern\u00ed n\u00e1stroj pro sb\u011br a agregaci log\u016f a metrik z opera\u010dn\u00edho syst\u00e9mu \u010di aplikac\u00ed, kter\u00fd dok\u00e1\u017ee nahradit rsyslog, Logstash nebo Filebeat. Elastic Common Schema (ECS) definuje strukturu log z\u00e1znam\u016f, tak aby byla jednotn\u00e1 nap\u0159\u00ed\u010d r\u016fzn\u00fdmi syst\u00e9my. Vector spolu s ECS vytv\u00e1\u0159\u00ed dvojci, d\u00edky kter\u00e9 je kone\u010dn\u011b mo\u017en\u00e9 efektivn\u011b analyzovat log z\u00e1znamy z r\u016fzn\u00fdch syst\u00e9m\u016f.", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "VSSXUG", "name": "Jakub Onderka", "avatar": null, "biography": "Jakub Onderka je \u010dlenem jednotky GovCERT.CZ, sou\u010d\u00e1st N\u00e1rodn\u00edho \u00fa\u0159adu pro kybernetickou a informa\u010dn\u00ed bezpe\u010dnost, kter\u00e1 \u0159e\u0161\u00ed nejv\u00fdznamn\u011bj\u0161\u00ed \u00fatoky na \u010deskou kritickou informa\u010dn\u00ed infrastrukturu. Zab\u00fdv\u00e1 se v\u00fdvojem v jazyce Rust a Python a praktickou aplikac\u00ed bezpe\u010dnostn\u00edch n\u00e1stroj\u016f a postkvantov\u00e9 kryptografie.", "public_name": "Jakub Onderka", "guid": "f436301f-5949-55eb-b0f5-dbdcba3213b5", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/VSSXUG/"}], "links": [], "feedback_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/Y7TNRL/feedback/", "origin_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/Y7TNRL/", "attachments": [{"title": "Prezentace", "url": "/media/linuxdays-2025/submissions/Y7TNRL/resources/LinuxDays_Vector_D2Nn5G6.pdf", "type": "related"}]}, {"guid": "2f68fa47-afe6-5afb-822e-e6476b18b900", "code": "BW7XCX", "id": 466, "logo": null, "date": "2025-10-05T13:00:00+02:00", "start": "13:00", "duration": "00:50", "room": "155", "slug": "linuxdays-2025-466-zpracovani-vysoce-kvalitnich-radiovych-signalu", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/BW7XCX/", "title": "Zpracov\u00e1n\u00ed vysoce kvalitn\u00edch r\u00e1diov\u00fdch sign\u00e1l\u016f", "subtitle": "", "track": null, "type": "Talk", "language": "cs", "abstract": "V ide\u00e1ln\u00edm sv\u011bt\u011b si koup\u00edme softwarov\u011b definovan\u00e9 r\u00e1dio, p\u0159ipoj\u00edme ho k po\u010d\u00edta\u010di, a pak u\u017e si jen u\u017e\u00edv\u00e1me r\u00e1diov\u00fdch sign\u00e1l\u016f v na\u0161em obl\u00edben\u00e9m programovac\u00edm jazyce.\r\n\r\nVe skute\u010dn\u00e9m sv\u011bt\u011b zjist\u00edme, \u017ee tohle nefunguje tak dob\u0159e, jak by mohlo. Pokud sign\u00e1ly vys\u00edl\u00e1me, zjist\u00edme, \u017ee vys\u00edl\u00e1me i na frekvenc\u00edch, kter\u00e9 n\u00e1m nepat\u0159\u00ed, a n\u00e1\u0161 provoz tak nemus\u00ed m\u00edt dlouh\u00e9ho trv\u00e1n\u00ed. Pokud sign\u00e1ly jenom p\u0159ij\u00edm\u00e1me, neriskujeme sice n\u00e1v\u0161t\u011bvu z\u00e1sahovky, ale p\u0159ij\u00edman\u00fd sign\u00e1l nejsp\u00ed\u0161 nebude p\u0159\u00edli\u0161 dobr\u00fd - bude obsahovat r\u016fzn\u00e9 druhy \u0161um\u016f, bude zkreslen\u00fd a tak d\u00e1le.\r\n\r\nV motiva\u010dn\u00edm \u00favodu si uk\u00e1\u017eeme, pro\u010d se u high-endov\u00fdch r\u00e1diov\u00fdch za\u0159\u00edzen\u00ed vyplat\u00ed \"honit desetinky decibelu\". V prvn\u00ed \u010d\u00e1sti p\u0159edn\u00e1\u0161ky si uk\u00e1\u017eeme, jak\u00e9 prost\u0159edky jsou dostupn\u00e9 pro vylep\u0161ov\u00e1n\u00ed kvality sign\u00e1lu - filtry, sm\u011b\u0161ova\u010de, f\u00e1zov\u00e9 z\u00e1v\u011bsy. V druh\u00e9 \u010d\u00e1sti si uk\u00e1\u017eeme, jak\u00e9 nedostatky maj\u00ed b\u011b\u017en\u011b dostupn\u00e1 softwarov\u011b definovan\u00e1 r\u00e1dia, a jak je pomoc\u00ed t\u011bchto prost\u0159edk\u016f napravit. Cel\u00e9 to bude z prvn\u00ed ruky, proto\u017ee p\u0159esn\u011b tohle za\u017e\u00edv\u00e1m kdy\u017e stav\u00edm radary.\r\n\r\nMo\u017en\u00e1 to tak nevypad\u00e1, ale mysl\u00edm, \u017ee pro v\u00e1s bude p\u0159edn\u00e1\u0161ka zaj\u00edmav\u00e1 i pokud nem\u00e1te \u017e\u00e1dn\u00e9 zku\u0161enosti a znalosti ohledn\u011b r\u00e1diov\u00e9 techniky.", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "VXGQDN", "name": "Jan Hrach", "avatar": "https://pretalx.linuxdays.cz/media/avatars/VXGQDN_xRAETWU.jpeg", "biography": "Vyvinul radar na po\u010das\u00ed hodn\u00fd 21. stolet\u00ed a spoluzalo\u017eil startup, kter\u00fd je te\u010f vyr\u00e1b\u00ed a prod\u00e1v\u00e1 po sv\u011bt\u011b.\r\n\r\nRekrea\u010dn\u011b se zaj\u00edm\u00e1 o nastupuj\u00edc\u00ed technologie, jako je aktu\u00e1ln\u011b t\u0159eba AI.", "public_name": "Jan Hrach", "guid": "077885ce-e2a2-5739-bea5-2621b71869b8", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/VXGQDN/"}], "links": [], "feedback_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/BW7XCX/feedback/", "origin_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/BW7XCX/", "attachments": [{"title": "slidy", "url": "/media/linuxdays-2025/submissions/BW7XCX/resources/asp-linuxdays-2025_0RFvH6U.pdf", "type": "related"}]}, {"guid": "46810fe3-d915-527d-be49-06bc840d0928", "code": "TBU83F", "id": 410, "logo": null, "date": "2025-10-05T14:00:00+02:00", "start": "14:00", "duration": "00:20", "room": "155", "slug": "linuxdays-2025-410-deltachat-konecne-inovativni-im", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/TBU83F/", "title": "DeltaChat - kone\u010dn\u011b inovativn\u00ed IM", "subtitle": "", "track": null, "type": "Short Talk", "language": "cs", "abstract": "S IM se roztrh pytel. Klasick\u011bmu XMPP dnes konkuruj\u00ed slu\u017eby jako Matrix, Signal, Telegram, WhatsApp a dal\u0161\u00ed. Je tu v\u0161ak jedna slu\u017eba, kter\u00e1 v t\u00e9to z\u00e1plav\u011b komunik\u00e1tor\u016f vynik\u00e1 - DeltaChat. V p\u0159edn\u00e1\u0161ce v\u00e1m pov\u00edm co je na t\u00e9to slu\u017eb\u011b tolik zaj\u00edmav\u00e9.", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "VKNBTZ", "name": "Michal Hru\u0161eck\u00fd", "avatar": "https://pretalx.linuxdays.cz/media/avatars/VKNBTZ_Ln1rvbe.jpg", "biography": "Long time open source fan, free time sysadmin, developer. Long time openSUSE community member, now working full-time on Turris routers.", "public_name": "Michal Hru\u0161eck\u00fd", "guid": "1edee256-6c0e-5e7a-94b8-048105db5b93", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/VKNBTZ/"}], "links": [], "feedback_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/TBU83F/feedback/", "origin_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/TBU83F/", "attachments": [{"title": "Slidy", "url": "/media/linuxdays-2025/submissions/TBU83F/resources/deltachat_m4BJtLV.pdf", "type": "related"}]}, {"guid": "5d489fec-1860-5d2b-b1ca-b0accd4285ce", "code": "HYNEMQ", "id": 471, "logo": null, "date": "2025-10-05T14:30:00+02:00", "start": "14:30", "duration": "00:20", "room": "155", "slug": "linuxdays-2025-471-syslog-neni-zdarma", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/HYNEMQ/", "title": "Syslog nen\u00ed zdarma", "subtitle": "", "track": null, "type": "Short Talk", "language": "cs", "abstract": "Kr\u00e1tk\u00e9 vypr\u00e1v\u011bn\u00ed o tom, jak m\u016f\u017ee syslog u\u0161kodit va\u0161\u00ed vysoce v\u00fdkonn\u00e9 aplikaci.", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "ZHJRZL", "name": "Alexander Zubkov", "avatar": "https://pretalx.linuxdays.cz/media/avatars/ZHJRZL_A3iAASN.jpg", "biography": "Mnoho let pracuji s Linux a po\u010d\u00edta\u010dov\u00fdmi s\u00edt\u00ed.", "public_name": "Alexander Zubkov", "guid": "72baba07-6a78-520e-81aa-d3aaed2389ca", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/ZHJRZL/"}], "links": [], "feedback_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/HYNEMQ/feedback/", "origin_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/HYNEMQ/", "attachments": [{"title": "presentation", "url": "/media/linuxdays-2025/submissions/HYNEMQ/resources/linuxdays2025-zubkov_uXpGXRu.pdf", "type": "related"}]}], "107": [{"guid": "58f3836e-ec4f-5bec-a01a-f22834c7b1c7", "code": "BJANGG", "id": 378, "logo": "https://pretalx.linuxdays.cz/media/linuxdays-2025/submissions/BJANGG/rtems-can-fd_aZoDd42.png", "date": "2025-10-05T11:00:00+02:00", "start": "11:00", "duration": "00:50", "room": "107", "slug": "linuxdays-2025-378-navrh-subsystemu-can-fd-sbernice-pro-real-time-exekutivu-rtems", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/BJANGG/", "title": "N\u00e1vrh subsyst\u00e9mu CAN FD sb\u011brnice pro real-time exekutivu RTEMS", "subtitle": "", "track": null, "type": "Talk", "language": "cs", "abstract": "RTEMS je otev\u0159en\u00fd opera\u010dn\u00ed syst\u00e9m, kter\u00fd sv\u00e9 vyu\u017eit\u00ed nach\u00e1z\u00ed v kritick\u00fdch syst\u00e9mech re\u00e1ln\u00e9 \u010dasu, mezi kter\u00e9 pat\u0159\u00ed \u0159\u00eddic\u00ed prvky v automobilech a hromadn\u00e9 doprav\u011b, syst\u00e9my pro dru\u017eice, zdravotn\u00ed za\u0159\u00edzen\u00ed nebo s\u00ed\u0165ov\u00e9 prvky. Tyto aplikace \u010dasto vy\u017eaduj\u00ed deterministick\u00fd p\u0159enos kritick\u00fdch zpr\u00e1v mezi za\u0159\u00edzen\u00edmi, k \u010demu\u017e se mimo jin\u00e9 vyu\u017e\u00edv\u00e1 sb\u011brnicov\u00fd standard Controller Area Network.\r\n\r\nPro zjednodu\u0161en\u00ed p\u0159\u00edstupu na CAN sb\u011brnici implementuj\u00ed opera\u010dn\u00ed syst\u00e9my obecn\u00e9 rozhran\u00ed mezi aplikacemi a ovlada\u010di \u0159adi\u010d\u016f. P\u0159edn\u00e1\u0161ka p\u0159edstavuje n\u00e1vrh a implementaci takov\u00e9ho rozhran\u00ed do syst\u00e9mu RTEMS s podporou prioritn\u00edch front, blokuj\u00edc\u00edho a neblokuj\u00edc\u00edho p\u0159\u00edstupu, reportu chyb, rozhran\u00ed pro konfiguraci kontrol\u00e9ru a dal\u0161\u00edch funkc\u00ed. Mezi ty pat\u0159\u00ed dynamick\u00e1 redistribuce hardware buffer\u016f \u0159adi\u010de na prioritn\u00ed fronty \u0159e\u0161\u00edc\u00ed probl\u00e9m inverze priorit b\u011bhem arbitr\u00e1\u017en\u00ed f\u00e1ze na CAN sb\u011brnici.", "description": "Podpora subsyst\u00e9mu byla do mainline v\u011btve RTEMSu p\u0159id\u00e1na v zim\u011b leto\u0161n\u00edho roku: https://gitlab.rtems.org/rtems/rtos/rtems/-/merge_requests/49\r\n\r\nP\u0159edn\u00e1\u0161ka je c\u00edlena poslucha\u010d\u016fm s alespo\u0148 z\u00e1kladn\u00ed znalost\u00ed fungov\u00e1n\u00ed CAN/CAN FD sb\u011brnice a POSIX kompatabiln\u00edch opera\u010dn\u00edch syst\u00e9m\u016f.\r\n\r\nRTEMS: https://www.rtems.org/\r\nRTEMS CAN Stack dokumentace: https://docs.rtems.org/docs/main/bsp-howto/can.html\r\nCTU FEE CAN-bus Projects Pages: https://canbus.pages.fel.cvut.cz/\r\nLenc, M.; P\u00ed\u0161a, P.: Scheduling of CAN frame transmission when multiple FIFOs with assigned priorities are used in RTOS drivers, international CAN Conference, CAN in Automation, 2024: https://www.can-cia.org/fileadmin/cia/documents/proceedings/2024_lenc_pisa.pdf", "recording_license": "", "do_not_record": false, "persons": [{"code": "HSMJNN", "name": "Pavel P\u00ed\u0161a", "avatar": "https://pretalx.linuxdays.cz/media/Pavel_Pisa.jpg", "biography": "He studied cybernetics and robotics at [CTU](https://www.cvut.cz/en) [FEE](https://fel.cvut.cz/en), where he currently teaches and works on projects using GNU/Linux and other processor technologies. He participates in design of firmware and electronics of laboratory and medical devices and precise servo control at [PiKRON.com](http://pikron.com/) company. He provides consultations to more companies in the field as well.\r\n\r\n- projects positions: https://openhub.net/accounts/ppisa/positions\r\n- knowledge base for students, enthusiasts and professionals: https://gitlab.fel.cvut.cz/otrees/org/-/wikis/knowbase\r\n- RISC-V and computer architectures education https://comparch.edu.cvut.cz/\r\n- CAN-bus projects at CTU FEE https://canbus.pages.fel.cvut.cz/", "public_name": "Pavel P\u00ed\u0161a", "guid": "5d65e701-a5e7-5d5d-94df-88085f6bbf96", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/HSMJNN/"}, {"code": "NY79ZG", "name": "Michal Lenc", "avatar": null, "biography": "Vystudoval Kybernetiku a Robotiku na \u010cVUT FEL. Zab\u00fdv\u00e1 se v\u00fdvojem real-time opera\u010dn\u00edch syst\u00e9m\u016f pro embedded za\u0159\u00edzen\u00ed, p\u0159isp\u00edv\u00e1 do jader syst\u00e9m\u016f NuttX a ob\u010dasn\u011b RTEMS. V sou\u010dasn\u00e9 dob\u011b pracuje na v\u00fdvoji syst\u00e9m\u016f pro tramvajovou a trolejbusovou dopravu v Elektroline a.s.", "public_name": "Michal Lenc", "guid": "7748fb67-78f0-5d9c-8b27-f88c51ff6f22", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/NY79ZG/"}], "links": [{"title": "CAN FD Support for Space Grade Real-Time RTEMS Executive; Michal Lenc; 2024", "url": "https://dspace.cvut.cz/handle/10467/114749?locale-attribute=en", "type": "related"}, {"title": "Lenc, M.; P\u00ed\u0161a, P.: Scheduling of CAN frame transmission when multiple FIFOs with assigned priorities are used in RTOS drivers, international CAN Conference, CAN in Automation, 2024", "url": "https://www.can-cia.org/fileadmin/cia/documents/proceedings/2024_lenc_pisa.pdf", "type": "related"}], "feedback_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/BJANGG/feedback/", "origin_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/BJANGG/", "attachments": [{"title": "Slidy p\u0159edn\u00e1\u010dky", "url": "/media/linuxdays-2025/submissions/BJANGG/resources/rtems_can_slides_4nmyDGQ.pdf", "type": "related"}]}, {"guid": "e0207bc7-65c2-5fff-a0e2-0be96abbc8c8", "code": "8T8GCL", "id": 436, "logo": null, "date": "2025-10-05T13:00:00+02:00", "start": "13:00", "duration": "00:50", "room": "107", "slug": "linuxdays-2025-436-linux-na-stovky-zpusobu", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/8T8GCL/", "title": "Linux na stovky zp\u016fsob\u016f", "subtitle": "", "track": null, "type": "Talk", "language": "cs", "abstract": "Na sv\u011bt\u011b existuje p\u0159es 300 r\u016fzn\u00fdch linuxov\u00fdch distribuc\u00ed \u2013 pro\u010d jich je tolik a jak\u00fd m\u00e1 ka\u017ed\u00e1 z nich smysl? V p\u0159edn\u00e1\u0161ce se pod\u00edv\u00e1me na ty nejzaj\u00edmav\u011bj\u0161\u00ed, vysv\u011btl\u00edme rozd\u00edly v bal\u00ed\u010dkovac\u00edch syst\u00e9mech (Debian, Red Hat, Arch, NixOS aj.), v p\u0159\u00edstupu ke grafick\u00fdm prost\u0159ed\u00edm i spr\u00e1v\u011b softwaru. Sd\u00edl\u00edm praktick\u00e9 zku\u0161enosti, kter\u00e9 pomohou zorientovat se p\u0159i v\u00fdb\u011bru vhodn\u00e9 distribuce pro desktop i server.", "description": "V p\u0159edn\u00e1\u0161ce se zam\u011b\u0159\u00edme na nejzaj\u00edmav\u011bj\u0161\u00ed distribuce a jejich p\u0159\u00edstup k bal\u00ed\u010dk\u016fm, repozit\u00e1\u0159\u016fm a spr\u00e1v\u011b softwaru. Uk\u00e1\u017eeme si hlavn\u00ed proudy (Debian, Red Hat, Arch), specifick\u00e1 \u0159e\u0161en\u00ed jako NixOS a tak\u00e9 to, jak jednotliv\u00e9 distribuce pracuj\u00ed s grafick\u00fdmi prost\u0159ed\u00edmi \u2013 od velk\u00fdch projekt\u016f (KDE, GNOME, Cinnamon, MATE, Budgie, Deepin, Pantheon) a\u017e po minimalistick\u00e9 spr\u00e1vce oken, jako je Openbox. Pod\u00edv\u00e1me se tak\u00e9 na to, kter\u00e9 distribuce si vytv\u00e1\u0159ej\u00ed vlastn\u00ed n\u00e1stroje (nap\u0159. spr\u00e1vce soubor\u016f), a kter\u00e9 naopak stav\u00ed na hotov\u00fdch \u0159e\u0161en\u00edch.\r\n\r\nP\u0159edn\u00e1\u0161ka bude praktick\u00fdm pr\u016fvodcem sv\u011btem distribuc\u00ed \u2013 srozumiteln\u011b vysv\u011btl\u00ed jejich filozofii, rozd\u00edly a nab\u00eddne zku\u0161enosti z praxe, kter\u00e9 pomohou p\u0159i rozhodov\u00e1n\u00ed, jakou distribuci zvolit pro r\u016fzn\u00e9 \u00fa\u010dely \u2013 od server\u016f p\u0159es pracovn\u00ed stanice a\u017e po experiment\u00e1ln\u00ed nasazen\u00ed.", "recording_license": "", "do_not_record": false, "persons": [{"code": "NW8XVH", "name": "\u017divoslav Petr Bolf", "avatar": null, "biography": "Linux pou\u017e\u00edv\u00e1m u\u017e 30 let, vyzkou\u0161el jsem v\u011bt\u0161inu distribuc\u00ed, zkou\u0161el jsem je r\u016fzn\u011b kombinovat. Posledn\u00ed roky zkou\u0161\u00edm Nixos a jeho jedine\u010dn\u00fd p\u0159\u00edstup, pou\u017e\u00edv\u00e1m zejm\u00e9na distribuce zalo\u017een\u00e9 na arch linuxu a na debianu.", "public_name": "\u017divoslav Petr Bolf", "guid": "34366507-cc11-554f-9e87-8c4993f62f20", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/NW8XVH/"}], "links": [], "feedback_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/8T8GCL/feedback/", "origin_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/8T8GCL/", "attachments": [{"title": "Linuxov\u00e9 distribuce", "url": "/media/linuxdays-2025/submissions/8T8GCL/resources/linuxove-distribuce_i39qn5c.pdf", "type": "related"}, {"title": "Linuxov\u00e9 distrubuce timeline", "url": "/media/linuxdays-2025/submissions/8T8GCL/resources/Linux_Distribution_T_g5uo4N7.svg", "type": "related"}, {"title": "vpsfree graf zastoupen\u00ed distribuc\u00ed", "url": "/media/linuxdays-2025/submissions/8T8GCL/resources/vpsfree-distribuce_cEbKTtY.svg", "type": "related"}, {"title": "vpsfree graf p\u0159\u00edr\u016fstk\u016f distribuc\u00ed", "url": "/media/linuxdays-2025/submissions/8T8GCL/resources/vpsfree-prirustky_z515E7R.png", "type": "related"}]}, {"guid": "7b1d4518-1622-5a15-889a-dafc683b0ed3", "code": "DTD3RU", "id": 425, "logo": "https://pretalx.linuxdays.cz/media/linuxdays-2025/submissions/DTD3RU/llm_fH8zSim.png", "date": "2025-10-05T14:00:00+02:00", "start": "14:00", "duration": "00:50", "room": "107", "slug": "linuxdays-2025-425-velke-jazykove-modely-v-praxi-zkusenosti-z-provozu-e-infra-cz", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/DTD3RU/", "title": "Velk\u00e9 jazykov\u00e9 modely v praxi: zku\u0161enosti z provozu e-INFRA CZ", "subtitle": "", "track": null, "type": "Talk", "language": "cs", "abstract": "N\u00e1rodn\u00ed infrastruktura e-INFRA CZ v r\u00e1mci centra CERIT-SC ji\u017e v\u00edce ne\u017e p\u016fl roku provozuje vlastn\u00ed instance velk\u00fdch jazykov\u00fdch model\u016f ur\u010den\u00e9 pro v\u011bdeck\u00fd v\u00fdzkum. V t\u00e9to prezentaci p\u0159edstav\u00edme d\u016fvody, pro\u010d se rozhodujeme pro vlastn\u00ed provoz m\u00edsto vyu\u017eit\u00ed komer\u010dn\u00edch \u0159e\u0161en\u00ed, a z\u00e1rove\u0148 se zam\u011b\u0159\u00edme na teoretick\u00e9 aspekty, jako je vztah mezi po\u010dtem parametr\u016f modelu a jeho v\u00fdkonem, princip kvantizace model\u016f, v\u00fdznam KV cache a mo\u017enosti lok\u00e1ln\u00edho provozu model\u016f. Hlavn\u00ed \u010d\u00e1st prezentace bude v\u011bnov\u00e1na na\u0161im praktick\u00fdm zku\u0161enostem, tzv. lessons learned, v\u010detn\u011b pam\u011b\u0165ov\u00fdch n\u00e1rok\u016f jednotliv\u00fdch model\u016f, vlivu KV cache a velikosti GPU pam\u011bti na po\u010det obslou\u017een\u00fdch klient\u016f a dal\u0161\u00edch provozn\u00edch souvislost\u00ed. Sou\u010d\u00e1st\u00ed budou tak\u00e9 optimalizace, kter\u00e9 se osv\u011bd\u010dily pro efektivn\u00ed b\u011bh model\u016f, a p\u0159ehled ne\u010dekan\u00fdch probl\u00e9m\u016f, nap\u0159\u00edklad chybn\u00e9 alokace pam\u011bti v n\u011bkter\u00fdch verz\u00edch Linuxov\u00fdch jader nebo obt\u00ed\u017e\u00edm s paraleln\u00edm b\u011bhem v\u00edce model\u016f na stejn\u00fdch GPU. Prezentace uk\u00e1\u017ee, \u017ee i na p\u0159im\u011b\u0159en\u011b v\u00fdkonn\u00e9m hardware lze \u00fasp\u011b\u0161n\u011b provozovat velk\u00e9 pam\u011b\u0165ov\u00e9 modely s vysok\u00fdch v\u00fdkonem.", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "RNU9AF", "name": "Luk\u00e1\u0161 Hejtm\u00e1nek", "avatar": "https://pretalx.linuxdays.cz/media/avatars/avatar.jpg.320x320px_djQKqsc.jpg", "biography": "IT architect at center CERIT-SC Masaryk University and e-INFRA CZ. Containers, Kubernetes, AI, LLMs, AI Agents.", "public_name": "Luk\u00e1\u0161 Hejtm\u00e1nek", "guid": "d1103302-fa6a-5816-bb99-e46f51a2fa02", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/RNU9AF/"}], "links": [], "feedback_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/DTD3RU/feedback/", "origin_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/DTD3RU/", "attachments": [{"title": "Sl\u00eddy p\u0159edn\u00e1\u0161ky", "url": "/media/linuxdays-2025/submissions/DTD3RU/resources/LinuxDays-2025_guzLFVK.pdf", "type": "related"}]}, {"guid": "f90d1663-78d2-5787-a039-05320034e766", "code": "STQ3CX", "id": 467, "logo": null, "date": "2025-10-05T15:00:00+02:00", "start": "15:00", "duration": "00:20", "room": "107", "slug": "linuxdays-2025-467-vyhodnocovani-umele-inteligence-ai-benchmarky", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/STQ3CX/", "title": "Vyhodnocov\u00e1n\u00ed um\u011bl\u00e9 inteligence (AI benchmarky)", "subtitle": "", "track": null, "type": "Short Talk", "language": "cs", "abstract": "P\u0159edstav\u00edme si zp\u016fsoby, kter\u00fdmi se vyhodnocuje kvalita a v\u00fdvoj sou\u010dasn\u00fdch jazykov\u00fdch model\u016f (LLM), AI asistent\u016f a obdobn\u00fdch technologi\u00ed.\r\n\r\nUk\u00e1\u017eeme r\u016fzn\u00e9 \u00falohy, kter\u00fdmi se lid\u00e9 sna\u017e\u00ed zjistit, jak moc jsou jejich programy skute\u010dn\u011b inteligentn\u00ed - a co si vlastn\u011b pod inteligenc\u00ed p\u0159edstavuj\u00ed. Letem sv\u011btem od Turingova testu p\u0159es Winogradovy dvojice po SWE-Bench a ARC-AGI.", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "VXGQDN", "name": "Jan Hrach", "avatar": "https://pretalx.linuxdays.cz/media/avatars/VXGQDN_xRAETWU.jpeg", "biography": "Vyvinul radar na po\u010das\u00ed hodn\u00fd 21. stolet\u00ed a spoluzalo\u017eil startup, kter\u00fd je te\u010f vyr\u00e1b\u00ed a prod\u00e1v\u00e1 po sv\u011bt\u011b.\r\n\r\nRekrea\u010dn\u011b se zaj\u00edm\u00e1 o nastupuj\u00edc\u00ed technologie, jako je aktu\u00e1ln\u011b t\u0159eba AI.", "public_name": "Jan Hrach", "guid": "077885ce-e2a2-5739-bea5-2621b71869b8", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/VXGQDN/"}], "links": [], "feedback_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/STQ3CX/feedback/", "origin_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/STQ3CX/", "attachments": [{"title": "slidy", "url": "/media/linuxdays-2025/submissions/STQ3CX/resources/aibench-linuxdays-20_8Qtk86D.pdf", "type": "related"}]}], "111": [{"guid": "f4572bcf-2044-52c5-8346-41324f3c32f6", "code": "TGLTLF", "id": 383, "logo": null, "date": "2025-10-05T10:30:00+02:00", "start": "10:30", "duration": "00:20", "room": "111", "slug": "linuxdays-2025-383-xdp-programovatelny-sitovy-stack", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/TGLTLF/", "title": "XDP - programovateln\u00fd s\u00ed\u0165ov\u00fd stack", "subtitle": "", "track": null, "type": "Short Talk", "language": "cs", "abstract": "XDP (eXpress Data Path) je technologie zalo\u017een\u00e1 na eBPF (extended Berkeley Packet Filter), kter\u00e1 je sou\u010d\u00e1st\u00ed Linuxov\u00e9ho j\u00e1dra. XDP si klade za c\u00edl zv\u00fd\u0161it propustnost s\u00ed\u0165ov\u00e9ho stacku. Hlavn\u00ed my\u0161lenkou je nahr\u00e1t p\u0159\u00edmo do kernelu mal\u00fd program, kter\u00fd je spu\u0161t\u011bn pro ka\u017ed\u00fd p\u0159ijat\u00fd paket.\r\nXDP umo\u017e\u0148uje \u010d\u00edst a m\u011bnit data paketu a rozhodnout o jeho osudu je\u0161t\u011b p\u0159ed t\u00edm, ne\u017e dojde k n\u00e1ro\u010dn\u00e9mu zpracov\u00e1n\u00ed vy\u0161\u0161\u00edmi s\u00ed\u0165ov\u00fdmi vrstvami, zat\u00edmco technologie eBPF garantuje bezpe\u010dn\u00e9 spou\u0161tn\u011bn\u00ed programu v privilegovan\u00e9m re\u017eimu.\r\nPro v\u00fdkonostn\u011b n\u00e1ro\u010dn\u00e9 pou\u017eit\u00ed nab\u00edz\u00ed XDP mo\u017enost obej\u00edt s\u00ed\u0165ov\u00fd stack a pos\u00edlat pakety p\u0159\u00edmo do specializovan\u00e9 u\u017eivatelsk\u00e9 aplikace. Tento re\u017eim se naz\u00fdv\u00e1 AF_XDP nebo XDP zero copy a v r\u00e1mci samotn\u00e9ho kernelu nab\u00edz\u00ed alternativu ke specializovan\u00fdm framework\u016fm pro obch\u00e1zen\u00ed s\u00ed\u0165ov\u00e9ho stacku, jako je nap\u0159. DPDK (Data Plane Development Kit).", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "ZL8KFZ", "name": "Richard Hyro\u0161", "avatar": "https://pretalx.linuxdays.cz/media/avatars/ZL8KFZ_jaABfUm.jpg", "biography": "Jsem studentem VUT FIT a program\u00e1torem ve sdru\u017een\u00ed CESNET, kde v t\u00fdmu hardwarov\u00e9 akcelerace pracuji na integraci technologie XDP (eXpress Data Path) do kernelov\u00e9ho ovlada\u010de platformy NDK FPGA (Network Development Kit for FPGA NICs).", "public_name": "Richard Hyro\u0161", "guid": "4ec1105d-a1e8-5f3b-ac13-7943cd418602", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/ZL8KFZ/"}], "links": [], "feedback_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/TGLTLF/feedback/", "origin_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/TGLTLF/", "attachments": [{"title": "Prezentace", "url": "/media/linuxdays-2025/submissions/TGLTLF/resources/XDP-linuxdays_9UGu4kH.pdf", "type": "related"}]}, {"guid": "0911c452-71db-596b-8461-44235a7e9d22", "code": "YNQXGF", "id": 452, "logo": null, "date": "2025-10-05T11:00:00+02:00", "start": "11:00", "duration": "00:20", "room": "111", "slug": "linuxdays-2025-452-faster-backup-restore-from-proxmox-backup-server", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/YNQXGF/", "title": "Faster backup restore from Proxmox Backup Server", "subtitle": "", "track": null, "type": "Short Talk", "language": "en", "abstract": "How did we get to speeding up backup restore from Proxmox Backup Server? How did the development and integration process go? What will be the next steps?\r\nThe talk will outline what successful and commercially viable independent open-source development can look like.", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "J9FTER", "name": "Adam Kalisz", "avatar": "https://pretalx.linuxdays.cz/media/avatars/AdamKalisz_UN4_9046_sq_zoomed_aFYuGgL.JPG", "biography": "Adam studoval 10 let v Dr\u00e1\u017e\u010fanech. Po dobu 6 let navrhoval, migroval a provozoval s\u00ed\u0165 a celou \u0159adu dal\u0161\u00edch syst\u00e9m\u016f v BGH Edelstahlwerke GmbH. Pot\u00e9 pracoval 3 roky ve startupu OrgPad.com, kde byl zodpov\u011bdn\u00fd za instrastrukturu a bezpe\u010dnost a tak\u00e9 dost programoval v Clojure/ ClojureScriptu. Na p\u0159elomu roku 2023 a 2024 se sv\u00fdm bratrem V\u00edtem zalo\u017eili konzulta\u010dn\u00ed firmu NOT NULL Makers. Firm\u00e1m nab\u00edz\u00ed konzultace v oblasti IT a businessu. Ve voln\u00e9m \u010dase poslouch\u00e1 r\u00e1d hudbu a chod\u00ed do sauny.", "public_name": "Adam Kalisz", "guid": "d064a8fa-f0b1-5b67-b5c3-ffdcdc7a96c8", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/J9FTER/"}], "links": [], "feedback_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/YNQXGF/feedback/", "origin_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/YNQXGF/", "attachments": [{"title": "Faster backup restore from Proxmox Backup Server presentation", "url": "/media/linuxdays-2025/submissions/YNQXGF/resources/ld2025-faster-backup_ms7BzCn.pdf", "type": "related"}]}, {"guid": "85441ab9-4e31-5525-a49c-aace09ea0329", "code": "YNLKYU", "id": 390, "logo": "https://pretalx.linuxdays.cz/media/linuxdays-2025/submissions/YNLKYU/fuzz-intro_VdiH5Vh.jpg", "date": "2025-10-05T11:30:00+02:00", "start": "11:30", "duration": "00:20", "room": "111", "slug": "linuxdays-2025-390-prakticky-uvod-do-fuzz-testu", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/YNLKYU/", "title": "Praktick\u00fd \u00favod do Fuzz-test\u016f", "subtitle": "", "track": null, "type": "Short Talk", "language": "cs", "abstract": "Fuzz-testov\u00e1n\u00ed je dynamick\u00e1 technika, kter\u00e1 odhaluje chyby a zranitelnosti zas\u00edl\u00e1n\u00edm neo\u010dek\u00e1van\u00fdch nebo po\u0161kozen\u00fdch vstup\u016f. V t\u00e9to p\u0159edn\u00e1\u0161ce si uk\u00e1\u017eeme, co fuzzing je, kdy se vyplat\u00ed a jak jej pou\u017e\u00edt v prost\u0159ed\u00ed s omezen\u00fdmi zdroji. Stru\u010dn\u011b porovn\u00e1me black-box, grey-box a white-box p\u0159\u00edstupy, vytvo\u0159\u00edme praktick\u00e9 fuzz targety z C/C++ k\u00f3du. Nau\u010d\u00edme se, jak p\u0159ipravit vstupn\u00ed data, naj\u00edt a reprodukovat chyby, probl\u00e9my s pam\u011bt\u00ed a napojit fuzzing do CI.", "description": "P\u0159ehled p\u0159\u00edklad\u016f, metod a n\u00e1stroj\u016f najdete v n\u00e1sleduj\u00edc\u00edm repozit\u00e1\u0159i: https://github.com/david-cermak/0xFFFFE\r\nV p\u0159edn\u00e1\u0161ce si projdeme a porovn\u00e1me p\u0159\u00edklady v sekci \"examples\": https://github.com/david-cermak/0xFFFFE/tree/main/examples", "recording_license": "", "do_not_record": false, "persons": [{"code": "WCUHGA", "name": "David \u010cerm\u00e1k", "avatar": null, "biography": "Embedded v\u00fdvoj\u00e1\u0159 v Espressif Systems", "public_name": "David \u010cerm\u00e1k", "guid": "568abfe2-0e4d-53ca-8acf-57c183f06eef", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/WCUHGA/"}], "links": [], "feedback_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/YNLKYU/feedback/", "origin_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/YNLKYU/", "attachments": [{"title": "slides", "url": "/media/linuxdays-2025/submissions/YNLKYU/resources/cermak_fuzzing_2_eZqEhcy.pdf", "type": "related"}]}, {"guid": "79987865-a9be-51fb-b7f2-b3756e877347", "code": "KVKMUX", "id": 432, "logo": null, "date": "2025-10-05T13:00:00+02:00", "start": "13:00", "duration": "00:20", "room": "111", "slug": "linuxdays-2025-432-co-je-zac-pressure-stall-information-psi", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/KVKMUX/", "title": "Co je za\u010d Pressure Stall Information (PSI)", "subtitle": "", "track": null, "type": "Short Talk", "language": "cs", "abstract": "C\u00edlem talku je sezn\u00e1mit n\u00e1v\u0161t\u011bvn\u00edky s lehce obskurn\u00ed, ale zaj\u00edmavou t\u0159\u00eddou metrik pro sledov\u00e1n\u00ed vyu\u017eit\u00ed potenci\u00e1lu zdroj\u016f (CPU, pam\u011b\u0165) syst\u00e9mu (\u010di jeho \u010d\u00e1st\u00ed, tj. kontejner\u016f). Vysv\u011btl\u00edm koncept linuxov\u00e9ho PSI a varianty t\u011bchto metrik. Uk\u00e1\u017eu p\u0159\u00edklady konkr\u00e9tn\u00edch hodnot PSI a jejich (ne?)pou\u017eitelnost pro n\u011bkter\u00e1 typick\u00e1 u\u017eivatelsk\u00e1 p\u0159\u00e1n\u00ed a tak\u00e9 srovn\u00e1n\u00ed s tradi\u010dn\u011bj\u0161\u00edmi metrikami (zn\u00e1te z topu).", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "BKV9EA", "name": "Michal Koutn\u00fd", "avatar": "https://pretalx.linuxdays.cz/media/avatars/630751_pcLuUiF.png", "biography": "Pracuji v SUSE, v\u011bnuji se control group\u00e1m v kernelu, v systemd. (Cgroups = ta \u010d\u00e1st kontejner\u016f, co nen\u00ed namespace.)", "public_name": "Michal Koutn\u00fd", "guid": "b85e71f8-0ec4-5d30-bc5f-c5afb027637d", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/BKV9EA/"}], "links": [], "feedback_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/KVKMUX/feedback/", "origin_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/KVKMUX/", "attachments": [{"title": "PSI slides", "url": "/media/linuxdays-2025/submissions/KVKMUX/resources/psi-slides_f05umxN.pdf", "type": "related"}]}, {"guid": "49583c15-2a63-5a38-91d0-aa333566e795", "code": "VYKRUL", "id": 470, "logo": null, "date": "2025-10-05T13:30:00+02:00", "start": "13:30", "duration": "00:20", "room": "111", "slug": "linuxdays-2025-470-nix-kontejnery", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/VYKRUL/", "title": "Nix & kontejnery", "subtitle": "", "track": null, "type": "Short Talk", "language": "cs", "abstract": "Kr\u00e1tk\u00e9 - a douf\u00e1m i zaj\u00edmav\u00e9 - pov\u00edd\u00e1n\u00ed o tom, co se stane, kdy\u017e n\u011bkdo, pro koho jsou kontejnery denn\u00edm chlebem, sko\u010dn\u00ed v kr\u00e1li\u010d\u00ed no\u0159e zvan\u00e9 Nix. Aneb kontejnery \"the Nix way\".", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "MWTWRV", "name": "Jakub Vokoun", "avatar": "https://pretalx.linuxdays.cz/media/avatars/Slackware_Tux_250x250_5vguX9n.png", "biography": "\"L\u00edn\u00fd\" DevOps\u00e1k, kter\u00fd automatizuje v\u0161e, co mu p\u0159\u00edjde pod ruce. :-)", "public_name": "Jakub Vokoun", "guid": "001085a5-46b5-5c85-bad1-d0a0dd41331a", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/MWTWRV/"}], "links": [], "feedback_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/VYKRUL/feedback/", "origin_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/VYKRUL/", "attachments": [{"title": "Prezentace", "url": "/media/linuxdays-2025/submissions/VYKRUL/resources/pres_hz0XYwv.pdf", "type": "related"}]}, {"guid": "f92149ca-36bc-53bd-ae1e-ca3b80bb549e", "code": "AHXMGX", "id": 457, "logo": null, "date": "2025-10-05T14:00:00+02:00", "start": "14:00", "duration": "00:50", "room": "111", "slug": "linuxdays-2025-457-clicks-machine-kamera-se-skritky-uvnitr", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/AHXMGX/", "title": "Clicks machine -- kamera se sk\u0159\u00edtky uvnit\u0159", "subtitle": "", "track": null, "type": "Talk", "language": "cs", "abstract": "V telefonech se obvykle pou\u017e\u00edvaj\u00ed \u201ehloup\u00e9\u201c fotomoduly. To je vlastn\u011b v\u00fdhoda -- hardware je jednoduch\u00fd, ale v\u011bt\u0161\u00ed \u010d\u00e1st pr\u00e1ce mus\u00ed odv\u00e9st software. \u010casto chyb\u00ed ovlada\u010de pro ISP koprocesor nebo H.264 enkod\u00e9r. V p\u0159\u00edpad\u011b Librem 5 dokonce tyto koprocesory chyb\u00ed zcela.\r\n\r\nNa druhou stranu m\u00e1me k dispozici GPU, \u010dty\u0159i (in-order) ARM j\u00e1dra a n\u011bkolik gigabajt\u016f RAM. Se spr\u00e1vn\u00fdm softwarem by to m\u011blo sta\u010dit k po\u0159izov\u00e1n\u00ed kvalitn\u00edch fotografi\u00ed a k nat\u00e1\u010den\u00ed videa v rozli\u0161en\u00ed p\u0159ibli\u017en\u011b 1024\u00d7768 p\u0159i 30 fps. Dobrou zpr\u00e1vou je, \u017ee GPU m\u00e1 dnes t\u00e9m\u011b\u0159 ka\u017ed\u00fd telefon a ovlada\u010de b\u00fdvaj\u00ed dostupn\u00e9. Software vyvinut\u00fd pro Librem 5 tak bude u\u017eite\u010dn\u00fd i na jin\u00fdch za\u0159\u00edzen\u00edch.\r\n\r\nHor\u0161\u00ed zpr\u00e1vou je, \u017ee to p\u0159edstavuje hodn\u011b pr\u00e1ce \u2013 a je\u0161t\u011b v\u00edce \u00fasil\u00ed bude t\u0159eba v\u011bnovat lad\u011bn\u00ed algoritm\u016f, aby kvalita v\u00fdsledk\u016f byla co nejlep\u0161\u00ed v r\u016fzn\u00fdch podm\u00ednk\u00e1ch. \u010c\u00e1st tohoto lad\u011bn\u00ed nav\u00edc mus\u00ed prob\u011bhnout pro konkr\u00e9tn\u00ed model telefonu.\r\n\r\nProgramov\u00e1n\u00ed GPU nen\u00ed p\u0159\u00edmo m\u016fj obor a nem\u00e1m mo\u017enost testovat na v\u0161ech telefonech s Linuxem, proto uv\u00edt\u00e1m pomoc.", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "NG9A7F", "name": "Pavel Machek", "avatar": null, "biography": "Pavel je kernelov\u00fd hacker, kter\u00fd se ve voln\u00e9m \u010dase zab\u00fdv\u00e1 nositelnou elektronikou.", "public_name": "Pavel Machek", "guid": "aca1f959-704d-5d04-8ca0-940d8fdc2ec5", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/NG9A7F/"}], "links": [], "feedback_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/AHXMGX/feedback/", "origin_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/AHXMGX/", "attachments": []}], "345": [{"guid": "fcac03f7-5f69-53d5-89f0-6d2463c10bca", "code": "LCZKPF", "id": 382, "logo": "https://pretalx.linuxdays.cz/media/linuxdays-2025/submissions/LCZKPF/ldw_ImZJjBr.png", "date": "2025-10-05T10:00:00+02:00", "start": "10:00", "duration": "02:50", "room": "345", "slug": "linuxdays-2025-382-linux-driver-workshop", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/LCZKPF/", "title": "Linux Driver Workshop", "subtitle": "", "track": "Workshops", "type": "Long Workshop", "language": "en", "abstract": "This workshop provides a brief introduction to Linux driver programming. The aim is to control an RGB LED using a small Linux driver on a Raspberry Pi.\r\n\r\nThe workshop is interactive and the knowledge gained can be applied immediately. All you need is a laptop; the Raspberry Pis and other hardware will be provided.", "description": "The workshop covers the following topcis:\r\n\r\n- Brief overview of the tasks of a Kernel\r\n- Introduction to the I2C bus\r\n- Setting up a Raspberry Pi for driver programming\r\n- Writing a Hello World I2C Driver\r\n- Writing a Makefile to build the driver\r\n- Accessing the I2C bus from within a driver\r\n- How to communicate with the driver from userspace over sysfs\r\n\r\nRequired software: Texteditor, ssh client and sshfs\r\n\r\nRequired hardware: Laptop with a USB A and Ethernet connector or dongle\r\n\r\nRequired knowledge:\r\n- First experience with the programming language C\r\n- Being able to navigate the Bash shell\r\n- Optional: first experience with Makefiles", "recording_license": "", "do_not_record": false, "persons": [{"code": "XQYPVN", "name": "Johannes Roith", "avatar": "https://pretalx.linuxdays.cz/media/avatars/61b3741acb9c8b12e88bc3622e80ce40_8cccw6s.jpg", "biography": "Embedded Linux Youtuber", "public_name": "Johannes Roith", "guid": "d2a95aec-ab86-5a13-b931-1791ac390441", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/XQYPVN/"}], "links": [{"title": "Material for workshop", "url": "https://github.com/Johannes4Linux/linuxdays.cz25", "type": "related"}], "feedback_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/LCZKPF/feedback/", "origin_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/LCZKPF/", "attachments": [{"title": "Slides", "url": "/media/linuxdays-2025/submissions/LCZKPF/resources/ltw25_ldp_YRRwFoh.pdf", "type": "related"}]}, {"guid": "ceea024c-617b-51d6-b672-f81372ac4ed3", "code": "Y8Q9LU", "id": 451, "logo": null, "date": "2025-10-05T13:00:00+02:00", "start": "13:00", "duration": "01:50", "room": "345", "slug": "linuxdays-2025-451-ssh-pro-uplne-zacatecniky", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/Y8Q9LU/", "title": "SSH pro \u00fapln\u00e9 za\u010d\u00e1te\u010dn\u00edky", "subtitle": "", "track": "Workshops", "type": "Long Workshop", "language": "cs", "abstract": "Pokud jste nov\u00e1\u010dky ve sv\u011bt\u011b Linuxu, je\u0161t\u011b bojujete s SSH, nepou\u017e\u00edv\u00e1te kl\u00ed\u010de, kop\u00edrov\u00e1n\u00ed soubor\u016f p\u0159es SSH je pro v\u00e1s v\u00fdzva, nebo si neum\u00edte p\u0159edstavit, jak byste mohli skrz SSH tunelovat provoz jste tu spr\u00e1vn\u011b. Workshop bude p\u0159\u00edle\u017eitost\u00ed nau\u010dit se, \u010di si osv\u011b\u017eit z\u00e1klady s SSH prakticky. Pro lidi, kte\u0159\u00ed sice SSH pou\u017e\u00edvaj\u00ed, ale nep\u0159ijde jim to moc pohodln\u00e9, nebo maj\u00ed trochu obavu z pou\u017e\u00edv\u00e1n\u00ed SSH kl\u00ed\u010d\u016f je to p\u0159\u00edle\u017eitost, jak se v bezpe\u010dn\u00e9m prost\u0159ed\u00ed workshopu posunout zase o kus d\u00e1l.", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "J9FTER", "name": "Adam Kalisz", "avatar": "https://pretalx.linuxdays.cz/media/avatars/AdamKalisz_UN4_9046_sq_zoomed_aFYuGgL.JPG", "biography": "Adam studoval 10 let v Dr\u00e1\u017e\u010fanech. Po dobu 6 let navrhoval, migroval a provozoval s\u00ed\u0165 a celou \u0159adu dal\u0161\u00edch syst\u00e9m\u016f v BGH Edelstahlwerke GmbH. Pot\u00e9 pracoval 3 roky ve startupu OrgPad.com, kde byl zodpov\u011bdn\u00fd za instrastrukturu a bezpe\u010dnost a tak\u00e9 dost programoval v Clojure/ ClojureScriptu. Na p\u0159elomu roku 2023 a 2024 se sv\u00fdm bratrem V\u00edtem zalo\u017eili konzulta\u010dn\u00ed firmu NOT NULL Makers. Firm\u00e1m nab\u00edz\u00ed konzultace v oblasti IT a businessu. Ve voln\u00e9m \u010dase poslouch\u00e1 r\u00e1d hudbu a chod\u00ed do sauny.", "public_name": "Adam Kalisz", "guid": "d064a8fa-f0b1-5b67-b5c3-ffdcdc7a96c8", "url": "https://pretalx.linuxdays.cz/linuxdays-2025/speaker/J9FTER/"}], "links": [], "feedback_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/Y8Q9LU/feedback/", "origin_url": "https://pretalx.linuxdays.cz/linuxdays-2025/talk/Y8Q9LU/", "attachments": [{"title": "SSH basics training", "url": "/media/linuxdays-2025/submissions/Y8Q9LU/resources/ld2025-ssh-basics-tr_dCr2YEc.pdf", "type": "related"}]}]}}]}}}