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Linux Professional InstituteHands-on <a href="https://fosstodon.org/tags/Linux" class="mention hashtag" rel="nofollow noopener" target="_blank">#Linux</a> challenges, <a href="https://fosstodon.org/tags/mentorship" class="mention hashtag" rel="nofollow noopener" target="_blank">#mentorship</a>, <a href="https://fosstodon.org/tags/networking" class="mention hashtag" rel="nofollow noopener" target="_blank">#networking</a>, and more—BLVCK In Tech Linux Hackathon 2025 in Dallas was all about learning and innovation.Read more about it: <a href="https://lpi.org/n27g" rel="nofollow noopener" translate="no" target="_blank">https://lpi.org/n27g</a>Linux Professional Institute (LPI) was a Media Partner! 🐧 🖤 💻<a href="https://fosstodon.org/tags/BLVCKInTech" class="mention hashtag" rel="nofollow noopener" target="_blank">#BLVCKInTech</a> <a href="https://fosstodon.org/tags/FOSS" class="mention hashtag" rel="nofollow noopener" target="_blank">#FOSS</a> <a href="https://fosstodon.org/tags/freesoftware" class="mention hashtag" rel="nofollow noopener" target="_blank">#freesoftware</a> <a href="https://fosstodon.org/tags/SysAdmin" class="mention hashtag" rel="nofollow noopener" target="_blank">#SysAdmin</a> <a href="https://fosstodon.org/tags/opensource" class="mention hashtag" rel="nofollow noopener" target="_blank">#opensource</a> <a href="https://fosstodon.org/tags/Linux" class="mention hashtag" rel="nofollow noopener" target="_blank">#Linux</a>

BastilleBSD :freebsd:🎉 Happy Friday <a href="https://fosstodon.org/tags/FreeBSD" class="mention hashtag" rel="nofollow noopener" target="_blank">#FreeBSD</a> What are you building, breaking or fixing today? <a href="https://fosstodon.org/tags/sysadmin" class="mention hashtag" rel="nofollow noopener" target="_blank">#sysadmin</a> <a href="https://fosstodon.org/tags/BastilleBSD" class="mention hashtag" rel="nofollow noopener" target="_blank">#BastilleBSD</a> <a href="https://fosstodon.org/tags/HappyFriday" class="mention hashtag" rel="nofollow noopener" target="_blank">#HappyFriday</a>

hauiIt's probably a good idea to do another <a href="https://mastodon.giftedmc.com/tags/introduction" class="mention hashtag" rel="nofollow noopener" target="_blank">#introduction</a> since people change over time, ideally.I'm haui. I help people & build things that help people. Big <a href="https://mastodon.giftedmc.com/tags/foss" class="mention hashtag" rel="nofollow noopener" target="_blank">#foss</a> enthusiast, <a href="https://mastodon.giftedmc.com/tags/sysadmin" class="mention hashtag" rel="nofollow noopener" target="_blank">#sysadmin</a> by day and <a href="https://mastodon.giftedmc.com/tags/hacktivist" class="mention hashtag" rel="nofollow noopener" target="_blank">#hacktivist</a> at night.I think all people (and animals) are born equal and should stay that way.I oppose <a href="https://mastodon.giftedmc.com/tags/capitalism" class="mention hashtag" rel="nofollow noopener" target="_blank">#capitalism</a> and embrace alternative systems. I dont care about <a href="https://mastodon.giftedmc.com/tags/corporatedemocracy" class="mention hashtag" rel="nofollow noopener" target="_blank">#corporatedemocracy</a> and manipulated "free speech".I want thirst, hunger and homelessness gone, for everyone, by any means necessary.

dan_nanniPOSIX Basic Regular Expressions (BRE) define a standardized syntax and behavior for regular expressions to ensure compatibility across Unix-like systems. Tools like grep, sed, and awk on Linux commonly support BRE for text processingHere are useful examples of POSIX BRE 😎👇 <a href="https://mastodon.social/tags/freebsd" class="mention hashtag" rel="nofollow noopener" target="_blank">#freebsd</a> <a href="https://mastodon.social/tags/sysadmin" class="mention hashtag" rel="nofollow noopener" target="_blank">#sysadmin</a> <a href="https://mastodon.social/tags/devops" class="mention hashtag" rel="nofollow noopener" target="_blank">#devops</a> <a href="https://mastodon.social/tags/opensource" class="mention hashtag" rel="nofollow noopener" target="_blank">#opensource</a> Find high-res pdf books with all my <a href="https://mastodon.social/tags/linux" class="mention hashtag" rel="nofollow noopener" target="_blank">#linux</a> related infographics at <a href="https://study-notes.org" rel="nofollow noopener" translate="no" target="_blank">https://study-notes.org</a>

2.5 Admins2.5 Admins 254: chrudoA vulnerability in sudo brings up concerns about feature-creep, and makes us consider alternatives. Plus Broadcom starts auditing VMware customers, and how to decide which outbound ports to open on a large network’s firewall.<a href="https://2.5admins.com/2-5-admins-254/" rel="nofollow noopener" translate="no" target="_blank">https://2.5admins.com/2-5-admins-254/</a><a href="https://mastodon.social/tags/podcast" class="mention hashtag" rel="nofollow noopener" target="_blank">#podcast</a> <a href="https://mastodon.social/tags/sysadmin" class="mention hashtag" rel="nofollow noopener" target="_blank">#sysadmin</a>

viqAnyone has any options about <a href="http://just.systems/man/en/" rel="nofollow noopener" translate="no" target="_blank">http://just.systems/man/en/</a> versus <a href="https://social.hackerspace.pl/tags/pydoit" class="mention hashtag" rel="nofollow noopener" target="_blank">#pydoit</a> versus "some other way to make it easier to share with others a way to do common tasks in this project"? <a href="https://social.hackerspace.pl/tags/SysAdmin" class="mention hashtag" rel="nofollow noopener" target="_blank">#SysAdmin</a> <a href="https://social.hackerspace.pl/tags/DevOps" class="mention hashtag" rel="nofollow noopener" target="_blank">#DevOps</a> <a href="https://social.hackerspace.pl/tags/Automation" class="mention hashtag" rel="nofollow noopener" target="_blank">#Automation</a> <a href="https://social.hackerspace.pl/tags/Just" class="mention hashtag" rel="nofollow noopener" target="_blank">#Just</a> <a href="https://social.hackerspace.pl/tags/DoIt" class="mention hashtag" rel="nofollow noopener" target="_blank">#DoIt</a> <a href="https://social.hackerspace.pl/tags/AskFedi" class="mention hashtag" rel="nofollow noopener" target="_blank">#AskFedi</a> <a href="https://social.hackerspace.pl/tags/TooManyHashtags" class="mention hashtag" rel="nofollow noopener" target="_blank">#TooManyHashtags</a>

dan_nanniSecurity audit for Linux involves a comprehensive review of system components to identify misconfigurations, vulnerabilities, and signs of compromiseHere are an itemized list of security audits for Linux systems 😎👇 <a href="https://mastodon.social/tags/linux" class="mention hashtag" rel="nofollow noopener" target="_blank">#linux</a> <a href="https://mastodon.social/tags/sysadmin" class="mention hashtag" rel="nofollow noopener" target="_blank">#sysadmin</a> <a href="https://mastodon.social/tags/devops" class="mention hashtag" rel="nofollow noopener" target="_blank">#devops</a> <a href="https://mastodon.social/tags/infosec" class="mention hashtag" rel="nofollow noopener" target="_blank">#infosec</a>Find high-res pdf books with all my <a href="https://mastodon.social/tags/cybersecurity" class="mention hashtag" rel="nofollow noopener" target="_blank">#cybersecurity</a> related infographics at <a href="https://study-notes.org" rel="nofollow noopener" translate="no" target="_blank">https://study-notes.org</a>

BastilleBSD :freebsd:Need to manage config file merges after <a href="https://fosstodon.org/tags/FreeBSD" class="mention hashtag" rel="nofollow noopener" target="_blank">#FreeBSD</a> version updates? BastilleBSD now supports `etcupdate` inside jails. Safe upgrades, clean configs. <a href="https://fosstodon.org/tags/BastilleBSD" class="mention hashtag" rel="nofollow noopener" target="_blank">#BastilleBSD</a> <a href="https://fosstodon.org/tags/sysadmin" class="mention hashtag" rel="nofollow noopener" target="_blank">#sysadmin</a>

Le Journal du hackerUn multiboot de clones RHEL <a href="https://www.journalduhacker.net/s/yx0al0/un_multiboot_de_clones_rhel" rel="nofollow noopener" translate="no" target="_blank">https://www.journalduhacker.net/s/yx0al0/un_multiboot_de_clones_rhel</a> <a href="https://blog.microlinux.fr/multiboot-clones-rhel/" rel="nofollow noopener" translate="no" target="_blank">https://blog.microlinux.fr/multiboot-clones-rhel/</a> <a href="https://framapiaf.org/tags/sysadmin" class="mention hashtag" rel="nofollow noopener" target="_blank">#sysadmin</a> <a href="https://framapiaf.org/tags/redhat" class="mention hashtag" rel="nofollow noopener" target="_blank">#redhat</a>

okanogen VerminEnemyFromWithin<a href="https://toot.cafe/@baldur" class="u-url mention" rel="nofollow noopener" target="_blank">@baldur</a> The <a href="https://mastodon.social/tags/AI" class="mention hashtag" rel="nofollow noopener" target="_blank">#AI</a> bubble is basically the same as the <a href="https://mastodon.social/tags/Cloud" class="mention hashtag" rel="nofollow noopener" target="_blank">#Cloud</a> bubble. Our IT <a href="https://mastodon.social/tags/sysadmin" class="mention hashtag" rel="nofollow noopener" target="_blank">#sysadmin</a> group tried as hard as we could, but ultimately, <a href="https://mastodon.social/tags/Microsoft" class="mention hashtag" rel="nofollow noopener" target="_blank">#Microsoft</a> active measures to destroy onsite servers and applications made it untenable to avoid <a href="https://mastodon.social/tags/O365" class="mention hashtag" rel="nofollow noopener" target="_blank">#O365</a>. And now that includes being forced to use <a href="https://mastodon.social/tags/CoPilot" class="mention hashtag" rel="nofollow noopener" target="_blank">#CoPilot</a> We know this is a time bomb, but it is politically untenable (at this time) to migrate to <a href="https://mastodon.social/tags/Linux" class="mention hashtag" rel="nofollow noopener" target="_blank">#Linux</a> desktol and <a href="https://mastodon.social/tags/LibreOffice" class="mention hashtag" rel="nofollow noopener" target="_blank">#LibreOffice</a>.

dan_nanniOn Linux, file extensions are mostly a matter of convention. They don’t determine how a file is handled. Instead, Linux relies on file permissions and internal metadata (like magic numbers) to identify and process files.Still, learning common Linux file extensions is useful for understanding file types and managing files more effectively 😎👇 <a href="https://mastodon.social/tags/sysadmin" class="mention hashtag" rel="nofollow noopener" target="_blank">#sysadmin</a> <a href="https://mastodon.social/tags/devops" class="mention hashtag" rel="nofollow noopener" target="_blank">#devops</a> <a href="https://mastodon.social/tags/technology" class="mention hashtag" rel="nofollow noopener" target="_blank">#technology</a>Find high-res pdf books with all my <a href="https://mastodon.social/tags/linux" class="mention hashtag" rel="nofollow noopener" target="_blank">#linux</a> related infographics at <a href="https://study-notes.org" rel="nofollow noopener" translate="no" target="_blank">https://study-notes.org</a>

Michał "rysiek" Woźniak · 🇺🇦> After this operation, 4.1 GB of additional disk space will be used.There's a lot to unpack here…<a href="https://mstdn.social/tags/SysAdmin" class="mention hashtag" rel="nofollow noopener" target="_blank">#SysAdmin</a> <a href="https://mstdn.social/tags/Shitpost" class="mention hashtag" rel="nofollow noopener" target="_blank">#Shitpost</a>

Stefano MarinelliHow to install FreeBSD on providers that don't support it with mfsBSD<a href="https://it-notes.dragas.net/2025/07/02/install_freebsd_providers_mfsbsd/" rel="nofollow noopener" translate="no" target="_blank">https://it-notes.dragas.net/2025/07/02/install_freebsd_providers_mfsbsd/</a><a href="https://mastodon.bsd.cafe/tags/ITNotes" class="mention hashtag" rel="nofollow noopener" target="_blank">#ITNotes</a> <a href="https://mastodon.bsd.cafe/tags/FreeBSD" class="mention hashtag" rel="nofollow noopener" target="_blank">#FreeBSD</a> <a href="https://mastodon.bsd.cafe/tags/hosting" class="mention hashtag" rel="nofollow noopener" target="_blank">#hosting</a> <a href="https://mastodon.bsd.cafe/tags/server" class="mention hashtag" rel="nofollow noopener" target="_blank">#server</a> <a href="https://mastodon.bsd.cafe/tags/IT" class="mention hashtag" rel="nofollow noopener" target="_blank">#IT</a> <a href="https://mastodon.bsd.cafe/tags/SysAdmin" class="mention hashtag" rel="nofollow noopener" target="_blank">#SysAdmin</a> <a href="https://mastodon.bsd.cafe/tags/tutorial" class="mention hashtag" rel="nofollow noopener" target="_blank">#tutorial</a> <a href="https://mastodon.bsd.cafe/tags/VPS" class="mention hashtag" rel="nofollow noopener" target="_blank">#VPS</a> <a href="https://mastodon.bsd.cafe/tags/RunBSD" class="mention hashtag" rel="nofollow noopener" target="_blank">#RunBSD</a> <a href="https://mastodon.bsd.cafe/tags/BSD" class="mention hashtag" rel="nofollow noopener" target="_blank">#BSD</a>

Stefano MarinelliDev just messaged me, alarmed: a WordPress plugin's tech support logged into his site and broke everything! 😱 But Dev is sharp, and even at 22:10, he remembered his server runs FreeBSD and ZFS. With snapshots of his site and database every 15 minutes, we rolled back to the 20:00 snapshot, and his site was back up in a flash!Thank you, FreeBSD! Thank you, ZFS!<a href="https://mastodon.bsd.cafe/tags/FreeBSD" class="mention hashtag" rel="nofollow noopener" target="_blank">#FreeBSD</a> <a href="https://mastodon.bsd.cafe/tags/ZFS" class="mention hashtag" rel="nofollow noopener" target="_blank">#ZFS</a> <a href="https://mastodon.bsd.cafe/tags/WebDev" class="mention hashtag" rel="nofollow noopener" target="_blank">#WebDev</a> <a href="https://mastodon.bsd.cafe/tags/WordPress" class="mention hashtag" rel="nofollow noopener" target="_blank">#WordPress</a> <a href="https://mastodon.bsd.cafe/tags/SysAdmin" class="mention hashtag" rel="nofollow noopener" target="_blank">#SysAdmin</a> <a href="https://mastodon.bsd.cafe/tags/DataRecovery" class="mention hashtag" rel="nofollow noopener" target="_blank">#DataRecovery</a> <a href="https://mastodon.bsd.cafe/tags/Snapshots" class="mention hashtag" rel="nofollow noopener" target="_blank">#Snapshots</a> <a href="https://mastodon.bsd.cafe/tags/ThankYouTuesday" class="mention hashtag" rel="nofollow noopener" target="_blank">#ThankYouTuesday</a>

dan_nanniIn Linux, there are many ways to monitor network traffic from command line. Some tools sniff individual network packets while others report aggregated traffic stats. Here are a categorized list of network monitoring tools for Linux 😎👇<a href="https://mastodon.social/tags/sysadmin" class="mention hashtag" rel="nofollow noopener" target="_blank">#sysadmin</a> <a href="https://mastodon.social/tags/devops" class="mention hashtag" rel="nofollow noopener" target="_blank">#devops</a> <a href="https://mastodon.social/tags/opensource" class="mention hashtag" rel="nofollow noopener" target="_blank">#opensource</a> <a href="https://mastodon.social/tags/technology" class="mention hashtag" rel="nofollow noopener" target="_blank">#technology</a>Find high-res pdf books with all my <a href="https://mastodon.social/tags/linux" class="mention hashtag" rel="nofollow noopener" target="_blank">#linux</a> related infographics at <a href="https://study-notes.org" rel="nofollow noopener" translate="no" target="_blank">https://study-notes.org</a>

dan_nanniModern high-speed Ethernet standards often use optical transceivers to transmit data over long distances via fiber optic cables. These transceivers are essential in data centers, enterprise networks, and carrier infrastructure where copper cabling is insufficient for speed or distance requirementsHere are different types of optical transceivers 😎👇 <a href="https://mastodon.social/tags/datacenters" class="mention hashtag" rel="nofollow noopener" target="_blank">#datacenters</a> <a href="https://mastodon.social/tags/sysadmin" class="mention hashtag" rel="nofollow noopener" target="_blank">#sysadmin</a> <a href="https://mastodon.social/tags/technology" class="mention hashtag" rel="nofollow noopener" target="_blank">#technology</a>Find high-res pdf books with all my <a href="https://mastodon.social/tags/networking" class="mention hashtag" rel="nofollow noopener" target="_blank">#networking</a> related infographics at <a href="https://study-notes.org" rel="nofollow noopener" translate="no" target="_blank">https://study-notes.org</a>

Jonathan MatthewsWhat tools do you use for your on-host <a href="https://snac.bsd.cafe?t=freebsd" class="mention hashtag" rel="nofollow noopener" target="_blank">#FreeBSD</a>|<a href="https://snac.bsd.cafe?t=bsd" class="mention hashtag" rel="nofollow noopener" target="_blank">#BSD</a> system metrics collection and monitoring? <a href="https://snac.bsd.cafe?t=sysadmin" class="mention hashtag" rel="nofollow noopener" target="_blank">#Sysadmin</a> <a href="https://snac.bsd.cafe?t=devops" class="mention hashtag" rel="nofollow noopener" target="_blank">#DevOps</a> <a href="https://snac.bsd.cafe?t=sre" class="mention hashtag" rel="nofollow noopener" target="_blank">#SRE</a> <a href="https://snac.bsd.cafe?t=monitoring" class="mention hashtag" rel="nofollow noopener" target="_blank">#Monitoring</a> <a href="https://snac.bsd.cafe?t=systems" class="mention hashtag" rel="nofollow noopener" target="_blank">#Systems</a> <a href="https://snac.bsd.cafe?t=observability" class="mention hashtag" rel="nofollow noopener" target="_blank">#Observability</a> <a href="https://snac.bsd.cafe?t=metrics" class="mention hashtag" rel="nofollow noopener" target="_blank">#Metrics</a>

dan_nanniOn Linux, I/O redirection allows you to control where a command reads input from or sends output to, such as files, devices, or other programs, by manipulating standard input, output, and error streamsHere are useful I/O redirection examples 😎👇 <a href="https://mastodon.social/tags/sysadmin" class="mention hashtag" rel="nofollow noopener" target="_blank">#sysadmin</a> <a href="https://mastodon.social/tags/devops" class="mention hashtag" rel="nofollow noopener" target="_blank">#devops</a> <a href="https://mastodon.social/tags/infosec" class="mention hashtag" rel="nofollow noopener" target="_blank">#infosec</a> <a href="https://mastodon.social/tags/cybersecurity" class="mention hashtag" rel="nofollow noopener" target="_blank">#cybersecurity</a>Find high-res pdf books with all my <a href="https://mastodon.social/tags/Linux" class="mention hashtag" rel="nofollow noopener" target="_blank">#Linux</a> related infographics at <a href="https://study-notes.org" rel="nofollow noopener" translate="no" target="_blank">https://study-notes.org</a>

Alfonso Sicilianonsysctl 2.2 is out!New features and improvements: <a href="https://alfonsosiciliano.gitlab.io/posts/2025-06-28-nsysctl-2-2.html" rel="nofollow noopener" translate="no" target="_blank">https://alfonsosiciliano.gitlab.io/posts/2025-06-28-nsysctl-2-2.html</a>Manual and tutorial already updated! <a href="https://mastodon.bsd.cafe/tags/documentation" class="mention hashtag" rel="nofollow noopener" target="_blank">#documentation</a> <a href="https://mastodon.bsd.cafe/tags/docs" class="mention hashtag" rel="nofollow noopener" target="_blank">#docs</a> <a href="https://mastodon.bsd.cafe/tags/manual" class="mention hashtag" rel="nofollow noopener" target="_blank">#manual</a> <a href="https://mastodon.bsd.cafe/tags/tutorial" class="mention hashtag" rel="nofollow noopener" target="_blank">#tutorial</a>Port update in progress sysutils/nsysctl <a href="https://mastodon.bsd.cafe/tags/FreeBSD" class="mention hashtag" rel="nofollow noopener" target="_blank">#FreeBSD</a> <a href="https://mastodon.bsd.cafe/tags/UNIX" class="mention hashtag" rel="nofollow noopener" target="_blank">#UNIX</a> <a href="https://mastodon.bsd.cafe/tags/sysadmin" class="mention hashtag" rel="nofollow noopener" target="_blank">#sysadmin</a> <a href="https://mastodon.bsd.cafe/tags/sysctl" class="mention hashtag" rel="nofollow noopener" target="_blank">#sysctl</a> <a href="https://mastodon.bsd.cafe/tags/HappyHacking" class="mention hashtag" rel="nofollow noopener" target="_blank">#HappyHacking</a> <a href="https://mastodon.bsd.cafe/tags/runbsd" class="mention hashtag" rel="nofollow noopener" target="_blank">#runbsd</a> :runbsdBg: <a href="https://mastodon.bsd.cafe/tags/OpenSource" class="mention hashtag" rel="nofollow noopener" target="_blank">#OpenSource</a>

viqThere was a thread where someone was suggesting filters at web server level for fighting the <a href="https://social.hackerspace.pl/tags/AI" class="mention hashtag" rel="nofollow noopener" target="_blank">#AI</a> <a href="https://social.hackerspace.pl/tags/scrapers" class="mention hashtag" rel="nofollow noopener" target="_blank">#scrapers</a>, but I can't find it again... Anyone got link?Context: could be useful for <a href="https://mstdn.social/@rysiek/114761366640227394" rel="nofollow noopener" translate="no" target="_blank">https://mstdn.social/@rysiek/114761366640227394</a><a href="https://social.hackerspace.pl/tags/AskFedi" class="mention hashtag" rel="nofollow noopener" target="_blank">#AskFedi</a> <a href="https://social.hackerspace.pl/tags/SysAdmin" class="mention hashtag" rel="nofollow noopener" target="_blank">#SysAdmin</a>

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