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Monospace Mentor🚨LIVE NOW!🚨 DevOps/SRE Instructor Live StreamOn this lovely Monday, let's chat about <a href="https://floss.social/tags/Linux" class="mention hashtag" rel="nofollow noopener" target="_blank">#Linux</a> <a href="https://floss.social/tags/SystemAdministration" class="mention hashtag" rel="nofollow noopener" target="_blank">#SystemAdministration</a>, <a href="https://floss.social/tags/SelfHosting" class="mention hashtag" rel="nofollow noopener" target="_blank">#SelfHosting</a>, or any other topic in the <a href="https://floss.social/tags/DevOps" class="mention hashtag" rel="nofollow noopener" target="_blank">#DevOps</a> and <a href="https://floss.social/tags/SRE" class="mention hashtag" rel="nofollow noopener" target="_blank">#SRE</a> space you're interested in!<a href="https://monospacementor.com/live-stream/" rel="nofollow noopener" translate="no" target="_blank">https://monospacementor.com/live-stream/</a>

Monospace MentorUse `systemctl mask servicename` to completely prevent service starts - stronger than `disable`. Masked services can't start accidentally. Use `systemctl unmask` when needed.🔗 Learn more in my course: <a href="https://monospacementor.com/courses/linsys-1/" rel="nofollow noopener" translate="no" target="_blank">https://monospacementor.com/courses/linsys-1/</a><a href="https://floss.social/tags/Linux" class="mention hashtag" rel="nofollow noopener" target="_blank">#Linux</a> <a href="https://floss.social/tags/SystemAdministration" class="mention hashtag" rel="nofollow noopener" target="_blank">#SystemAdministration</a>

[nate@social0 ~]$ :idle:Well I decided to give it a shot! Enjoy! The Iron Sysadmin News Recap! (im not married to this title..)<a href="https://youtu.be/Y7x19QoviTM" rel="nofollow noopener" translate="no" target="_blank">https://youtu.be/Y7x19QoviTM</a><a href="https://social.undrground.org/tags/news" class="mention hashtag" rel="nofollow noopener" target="_blank">#news</a> <a href="https://social.undrground.org/tags/IT" class="mention hashtag" rel="nofollow noopener" target="_blank">#IT</a> <a href="https://social.undrground.org/tags/sysadmin" class="mention hashtag" rel="nofollow noopener" target="_blank">#sysadmin</a> <a href="https://social.undrground.org/tags/technology" class="mention hashtag" rel="nofollow noopener" target="_blank">#technology</a> <a href="https://social.undrground.org/tags/opensource" class="mention hashtag" rel="nofollow noopener" target="_blank">#opensource</a> <a href="https://social.undrground.org/tags/linux" class="mention hashtag" rel="nofollow noopener" target="_blank">#linux</a> <a href="https://social.undrground.org/tags/TechRecap" class="mention hashtag" rel="nofollow noopener" target="_blank">#TechRecap</a> <a href="https://social.undrground.org/tags/TechNews" class="mention hashtag" rel="nofollow noopener" target="_blank">#TechNews</a> <a href="https://social.undrground.org/tags/SystemAdministration" class="mention hashtag" rel="nofollow noopener" target="_blank">#SystemAdministration</a>

Fox Ritch :fjoxicon:🇩🇪To everyone who runs a email server: Block the 81.30.107.0/24 ip range. It belongs to some serbians who are trying to bruteforce login into your server.<a href="https://social.hostnetwork.xyz/tags/Mail" class="mention hashtag" rel="nofollow noopener" target="_blank">#Mail</a> <a href="https://social.hostnetwork.xyz/tags/EMail" class="mention hashtag" rel="nofollow noopener" target="_blank">#EMail</a> <a href="https://social.hostnetwork.xyz/tags/Selfhosting" class="mention hashtag" rel="nofollow noopener" target="_blank">#Selfhosting</a> <a href="https://social.hostnetwork.xyz/tags/systemadministration" class="mention hashtag" rel="nofollow noopener" target="_blank">#systemadministration</a> <a href="https://social.hostnetwork.xyz/tags/spam" class="mention hashtag" rel="nofollow noopener" target="_blank">#spam</a>

Monospace MentorUse setgid on shared directories: `chmod g+s /shared/project`. New files inherit group ownership, preventing permission chaos when multiple users collaborate.🔗 Learn more in my course: <a href="https://monospacementor.com/courses/linsys-1/" rel="nofollow noopener" translate="no" target="_blank">https://monospacementor.com/courses/linsys-1/</a><a href="https://floss.social/tags/Linux" class="mention hashtag" rel="nofollow noopener" target="_blank">#Linux</a> <a href="https://floss.social/tags/SystemAdministration" class="mention hashtag" rel="nofollow noopener" target="_blank">#SystemAdministration</a> <a href="https://floss.social/tags/SysAdmin" class="mention hashtag" rel="nofollow noopener" target="_blank">#SysAdmin</a>

Monospace Mentor LiveWe're live!DevOps/SRE Live Stream<a class="hashtag" href="https://directory.owncast.online/tags/owncast" rel="nofollow noopener" target="_blank">#owncast</a> <a class="hashtag" href="https://directory.owncast.online/tags/streaming" rel="nofollow noopener" target="_blank">#streaming</a> <a class="hashtag" href="https://directory.owncast.online/tags/linux" rel="nofollow noopener" target="_blank">#linux</a> <a class="hashtag" href="https://directory.owncast.online/tags/ruby" rel="nofollow noopener" target="_blank">#ruby</a> <a class="hashtag" href="https://directory.owncast.online/tags/sysadmin" rel="nofollow noopener" target="_blank">#sysadmin</a> <a class="hashtag" href="https://directory.owncast.online/tags/systemadministration" rel="nofollow noopener" target="_blank">#systemadministration</a> <a class="hashtag" href="https://directory.owncast.online/tags/unix" rel="nofollow noopener" target="_blank">#unix</a> <a class="hashtag" href="https://directory.owncast.online/tags/devops" rel="nofollow noopener" target="_blank">#devops</a> <a class="hashtag" href="https://directory.owncast.online/tags/development" rel="nofollow noopener" target="_blank">#development</a> <a class="hashtag" href="https://directory.owncast.online/tags/livecoding" rel="nofollow noopener" target="_blank">#livecoding</a> <a class="hashtag" href="https://directory.owncast.online/tags/codestream" rel="nofollow noopener" target="_blank">#codestream</a> <a class="hashtag" href="https://directory.owncast.online/tags/tech" rel="nofollow noopener" target="_blank">#tech</a><a href="https://live.monospacementor.com" rel="nofollow noopener" target="_blank">https://live.monospacementor.com</a>

Monospace Mentor🚨LIVE NOW!🚨 DevOps/SRE Instructor Live StreamOn this lovely Tuesday, let's chat about <a href="https://floss.social/tags/Linux" class="mention hashtag" rel="nofollow noopener" target="_blank">#Linux</a> <a href="https://floss.social/tags/SystemAdministration" class="mention hashtag" rel="nofollow noopener" target="_blank">#SystemAdministration</a>, <a href="https://floss.social/tags/SelfHosting" class="mention hashtag" rel="nofollow noopener" target="_blank">#SelfHosting</a>, or any other topic in the <a href="https://floss.social/tags/DevOps" class="mention hashtag" rel="nofollow noopener" target="_blank">#DevOps</a> and <a href="https://floss.social/tags/SRE" class="mention hashtag" rel="nofollow noopener" target="_blank">#SRE</a> space you're interested in!<a href="https://monospacementor.com/live-stream/" rel="nofollow noopener" translate="no" target="_blank">https://monospacementor.com/live-stream/</a>

Monospace Mentor🚨LIVE NOW!🚨 DevOps/SRE Instructor Live StreamOn this lovely Friday, let's chat about <a href="https://floss.social/tags/Linux" class="mention hashtag" rel="nofollow noopener" target="_blank">#Linux</a> <a href="https://floss.social/tags/SystemAdministration" class="mention hashtag" rel="nofollow noopener" target="_blank">#SystemAdministration</a>, <a href="https://floss.social/tags/SelfHosting" class="mention hashtag" rel="nofollow noopener" target="_blank">#SelfHosting</a>, or any other topic in the <a href="https://floss.social/tags/DevOps" class="mention hashtag" rel="nofollow noopener" target="_blank">#DevOps</a> and <a href="https://floss.social/tags/SRE" class="mention hashtag" rel="nofollow noopener" target="_blank">#SRE</a> space you're interested in!<a href="https://monospacementor.com/live-stream/" rel="nofollow noopener" translate="no" target="_blank">https://monospacementor.com/live-stream/</a>

Monospace MentorNever trust untested backups. With Borgmatic, use `borgmatic check --verbosity 2` for repository integrity and `borgmatic extract --dry-run` to simulate restores. Schedule monthly tests.🔗 Learn more in my course: <a href="https://monospacementor.com/courses/linsys-1/" rel="nofollow noopener" translate="no" target="_blank">https://monospacementor.com/courses/linsys-1/</a><a href="https://floss.social/tags/Linux" class="mention hashtag" rel="nofollow noopener" target="_blank">#Linux</a> <a href="https://floss.social/tags/SystemAdministration" class="mention hashtag" rel="nofollow noopener" target="_blank">#SystemAdministration</a>

bibliojobsFOLIO Systemadministrator*in (w/m/d), Vollzeit, E 11 TV-L befristet | <a href="https://www.gbv.de/news/stellen/pdf/stellenausschreibung_nr_9_2025_folio_hosting.pdf" rel="nofollow noopener" translate="no" target="_blank">https://www.gbv.de/news/stellen/pdf/stellenausschreibung_nr_9_2025_folio_hosting.pdf</a> | <a href="https://bibliojobs.eu/stellenangebote/117593/" rel="nofollow noopener" translate="no" target="_blank">https://bibliojobs.eu/stellenangebote/117593/</a> <a href="https://openbiblio.social/tags/bibliojobs" class="mention hashtag" rel="nofollow noopener" target="_blank">#bibliojobs</a> <a href="https://openbiblio.social/tags/Container" class="mention hashtag" rel="nofollow noopener" target="_blank">#Container</a> <a href="https://openbiblio.social/tags/FOLIO" class="mention hashtag" rel="nofollow noopener" target="_blank">#FOLIO</a> <a href="https://openbiblio.social/tags/Kubernetes" class="mention hashtag" rel="nofollow noopener" target="_blank">#Kubernetes</a> <a href="https://openbiblio.social/tags/Migration" class="mention hashtag" rel="nofollow noopener" target="_blank">#Migration</a> <a href="https://openbiblio.social/tags/Monitoring" class="mention hashtag" rel="nofollow noopener" target="_blank">#Monitoring</a> <a href="https://openbiblio.social/tags/Plattform" class="mention hashtag" rel="nofollow noopener" target="_blank">#Plattform</a> <a href="https://openbiblio.social/tags/Systemadministration" class="mention hashtag" rel="nofollow noopener" target="_blank">#Systemadministration</a>

Monospace MentorI just merged another chapter of the course materials of "Basic <a href="https://floss.social/tags/Linux" class="mention hashtag" rel="nofollow noopener" target="_blank">#Linux</a> <a href="https://floss.social/tags/SystemAdministration" class="mention hashtag" rel="nofollow noopener" target="_blank">#SystemAdministration</a>": <a href="https://courses.monospacementor.com/courses/linsys-1/mod08-shell_scripting/0803-text_processing.html" rel="nofollow noopener" translate="no" target="_blank">https://courses.monospacementor.com/courses/linsys-1/mod08-shell_scripting/0803-text_processing.html</a>This chapter covers grep, sed and awk, together with the regular expression basics you need for all three of them.The next cohort of this Linux <a href="https://floss.social/tags/SysAdmin" class="mention hashtag" rel="nofollow noopener" target="_blank">#SysAdmin</a> course starts in September, and there's an early-bird discount available until 15 August.

apfeltalk :verified:MacOS Sonoma 14.7.7, MacOS Ventura 13.7.7 und Safari 18.6: Sicherheitsupdates im Überblick Apple hat neue Updates für MacOS Sonoma, Ma <a href="https://www.apfeltalk.de/magazin/news/macos-sonoma-14-7-7-macos-ventura-13-7-7-und-safari-18-6-sicherheitsupdates-im-ueberblick/" rel="nofollow noopener" target="_blank">https://www.apfeltalk.de/magazin/news/macos-sonoma-14-7-7-macos-ventura-13-7-7-und-safari-18-6-sicherheitsupdates-im-ueberblick/</a> <a href="https://creators.social/tags/Mac" class="mention hashtag" rel="nofollow noopener" target="_blank">#Mac</a> <a href="https://creators.social/tags/News" class="mention hashtag" rel="nofollow noopener" target="_blank">#News</a> <a href="https://creators.social/tags/ApplePatch" class="mention hashtag" rel="nofollow noopener" target="_blank">#ApplePatch</a> <a href="https://creators.social/tags/AppleUpdate" class="mention hashtag" rel="nofollow noopener" target="_blank">#AppleUpdate</a> <a href="https://creators.social/tags/BetriebssystemUpdate" class="mention hashtag" rel="nofollow noopener" target="_blank">#BetriebssystemUpdate</a> <a href="https://creators.social/tags/ITSicherheit" class="mention hashtag" rel="nofollow noopener" target="_blank">#ITSicherheit</a> <a href="https://creators.social/tags/MacNutzerinnen" class="mention hashtag" rel="nofollow noopener" target="_blank">#MacNutzerinnen</a> <a href="https://creators.social/tags/MacSicherheit" class="mention hashtag" rel="nofollow noopener" target="_blank">#MacSicherheit</a> <a href="https://creators.social/tags/MacOSSonoma1477" class="mention hashtag" rel="nofollow noopener" target="_blank">#MacOSSonoma1477</a> <a href="https://creators.social/tags/MacOSVentura1377" class="mention hashtag" rel="nofollow noopener" target="_blank">#MacOSVentura1377</a> <a href="https://creators.social/tags/macOSUpdates" class="mention hashtag" rel="nofollow noopener" target="_blank">#macOSUpdates</a> <a href="https://creators.social/tags/Safari186" class="mention hashtag" rel="nofollow noopener" target="_blank">#Safari186</a> <a href="https://creators.social/tags/Sicherheitsupdate" class="mention hashtag" rel="nofollow noopener" target="_blank">#Sicherheitsupdate</a> <a href="https://creators.social/tags/Softwareaktualisierung" class="mention hashtag" rel="nofollow noopener" target="_blank">#Softwareaktualisierung</a> <a href="https://creators.social/tags/Systemadministration" class="mention hashtag" rel="nofollow noopener" target="_blank">#Systemadministration</a>

Fox Ritch :fjoxicon:🇩🇪how tf do other small instances survive? like my minio bucket is 1,2TB and i dont think every instances has 1,2tb just lying around for federated trash.<a href="https://mastodon.hostnetwork.xyz/tags/MastoAdmin" class="mention hashtag" rel="nofollow noopener" target="_blank">#MastoAdmin</a> <a href="https://mastodon.hostnetwork.xyz/tags/systemadministration" class="mention hashtag" rel="nofollow noopener" target="_blank">#systemadministration</a>

Franziska Köppe | madiko<a href="https://mastodon.green/tags/AusDerWerkstatt" class="mention hashtag" rel="nofollow noopener" target="_blank">#AusDerWerkstatt</a> 2025-28Passend zum <a href="https://mastodon.green/tags/SysAdminApprecationDay" class="mention hashtag" rel="nofollow noopener" target="_blank">#SysAdminApprecationDay</a> veröffentlichte ich heute meinen Blog-Beitrag zur Rund-Erneuerung meiner <a href="https://mastodon.green/tags/InformationsTechnologie" class="mention hashtag" rel="nofollow noopener" target="_blank">#InformationsTechnologie</a>: neues Smartphone, Umstellen von Kupfer- auf Glas-Faser-Netz, neues Betriebs-System WIN11. Und ein paar grundlegende Gedanken zum Thema IT für Freiberufler:innen.Bleib neugierig: <a href="https://madiko.com/gelebte-praxis/aus-der-werkstatt/2025/rund-erneuerung-informations-technologie-smartphone-glasfaser-win11/" rel="nofollow noopener" translate="no" target="_blank">https://madiko.com/gelebte-praxis/aus-der-werkstatt/2025/rund-erneuerung-informations-technologie-smartphone-glasfaser-win11/</a><a href="https://mastodon.green/tags/SysAdmin" class="mention hashtag" rel="nofollow noopener" target="_blank">#SysAdmin</a> <a href="https://mastodon.green/tags/SystemAdministration" class="mention hashtag" rel="nofollow noopener" target="_blank">#SystemAdministration</a>

It's FOSSHappy System Administrator Appreciation Day! 🥳If you didn't know: <a href="https://en.wikipedia.org/wiki/System_Administrator_Appreciation_Day" rel="nofollow noopener" translate="no" target="_blank">https://en.wikipedia.org/wiki/System_Administrator_Appreciation_Day</a><a href="https://mastodon.social/tags/systemadministrator" class="mention hashtag" rel="nofollow noopener" target="_blank">#systemadministrator</a> #<a href="https://mastodon.social/tags/systemadministration" class="mention hashtag" rel="nofollow noopener" target="_blank">#systemadministration</a>

CyberagenturSystemadministratoren sorgen im Verborgenen für Stabilität, Schutz und Reaktionsfähigkeit. Am heutigen <a href="https://social.bund.de/tags/SysAdminDay" class="mention hashtag" rel="nofollow noopener" target="_blank">#SysAdminDay</a> erinnern wir daran. Unsere Forschungsprogramme können sie unterstützen. Die <a href="https://social.bund.de/@Cyberagentur" class="u-url mention" rel="nofollow noopener" target="_blank">@Cyberagentur</a> finanziert Werkzeuge, die Admins helfen, Systeme vorausschauend abzusichern. Forschung für eine sichere digitale Infrastruktur. Mehr zum Aktionstag: <a href="https://t1p.de/3zdp0" rel="nofollow noopener" translate="no" target="_blank">https://t1p.de/3zdp0</a> <a href="https://social.bund.de/tags/Systemadministration" class="mention hashtag" rel="nofollow noopener" target="_blank">#Systemadministration</a> <a href="https://social.bund.de/tags/ITSecurity" class="mention hashtag" rel="nofollow noopener" target="_blank">#ITSecurity</a> <a href="https://social.bund.de/tags/Cyberagentur" class="mention hashtag" rel="nofollow noopener" target="_blank">#Cyberagentur</a> <a href="https://social.bund.de/tags/Cyberresilienz" class="mention hashtag" rel="nofollow noopener" target="_blank">#Cyberresilienz</a> <a href="https://social.bund.de/tags/DigitaleSouveraenitaet" class="mention hashtag" rel="nofollow noopener" target="_blank">#DigitaleSouveraenitaet</a> <a href="https://social.bund.de/tags/ForschungF%C3%BCrDieSicherheit" class="mention hashtag" rel="nofollow noopener" target="_blank">#ForschungFürDieSicherheit</a>

Monospace MentorLinux tip: Use `systemctl --failed` to quickly identify which services failed to start after boot. Much faster than scrolling through journal logs when troubleshooting system issues. <a href="https://floss.social/tags/Linux" class="mention hashtag" rel="nofollow noopener" target="_blank">#Linux</a> <a href="https://floss.social/tags/SystemAdministration" class="mention hashtag" rel="nofollow noopener" target="_blank">#SystemAdministration</a> <a href="https://floss.social/tags/SysAdmin" class="mention hashtag" rel="nofollow noopener" target="_blank">#SysAdmin</a>

Monospace MentorLinux tip: Set `HISTCONTROL=ignoredups:erasedups` in your init script to prevent duplicate commands cluttering your history. Clean history makes command recall much more efficient. <a href="https://floss.social/tags/Linux" class="mention hashtag" rel="nofollow noopener" target="_blank">#Linux</a> <a href="https://floss.social/tags/SystemAdministration" class="mention hashtag" rel="nofollow noopener" target="_blank">#SystemAdministration</a> <a href="https://floss.social/tags/SysAdmin" class="mention hashtag" rel="nofollow noopener" target="_blank">#SysAdmin</a>

Monospace MentorI've been busy preparing my community course "Basic Linux System Administration" for a few weeks now. The next instructor-led cohort starts in September.Here's the public chapter on text editing with vim. You can use it outside the course context, simply as a concise <a href="https://floss.social/tags/vim" class="mention hashtag" rel="nofollow noopener" target="_blank">#vim</a> tutorial.<a href="https://courses.monospacementor.com/courses/linsys-1/mod01-fundamentals/0105-editing.html" rel="nofollow noopener" translate="no" target="_blank">https://courses.monospacementor.com/courses/linsys-1/mod01-fundamentals/0105-editing.html</a><a href="https://floss.social/tags/SystemAdministration" class="mention hashtag" rel="nofollow noopener" target="_blank">#SystemAdministration</a> <a href="https://floss.social/tags/SysAdmin" class="mention hashtag" rel="nofollow noopener" target="_blank">#SysAdmin</a> <a href="https://floss.social/tags/Linux" class="mention hashtag" rel="nofollow noopener" target="_blank">#Linux</a>

Monospace MentorShell tip: `${var%suffix}` removes the shortest matching suffix. `${var%%suffix}` removes the longest. `${var#prefix}` and `${var#<a href="https://floss.social/tags/prefix" class="mention hashtag" rel="nofollow noopener" target="_blank">#prefix</a>}` work the same for prefixes. Mnemonic: # comes before % on the keyboard. <a href="https://floss.social/tags/Linux" class="mention hashtag" rel="nofollow noopener" target="_blank">#Linux</a> <a href="https://floss.social/tags/SystemAdministration" class="mention hashtag" rel="nofollow noopener" target="_blank">#SystemAdministration</a> <a href="https://floss.social/tags/SysAdmin" class="mention hashtag" rel="nofollow noopener" target="_blank">#SysAdmin</a>

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