FOSS Linux
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Latest posts
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How to Theme libadwaita Apps: What Actually Works
Gradience, the tool every theming guide still recommends, is gone: archived in 2024, 404 on Flathub, removed from the AUR. This hands-on test runs Vivid Gradience and Rewaita on Fedora 44 with GNOME 50.6, showing what each one actually recolors, what needs a Flatpak override,…
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How to Recover a Frozen Linux PC With Magic SysRq Keys
Magic SysRq is the kernel's own last-resort keyboard door for a frozen Linux PC. This guide shows you how to check and enable the sysrq policy on Ubuntu, Fedora, and Arch, which diagnostic and REISUB letters actually do, how to read the evidence in dmesg, and when SysRq honestly…
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Why Your Linux Apps Look Different: GTK vs Qt Explained
GTK and Qt are the two widget toolkits behind Linux apps, and neither ever reads the other's theme files. That fact explains why half your screen can look foreign after a theme change. This guide compares both families, covers what libadwaita changed for GNOME apps, and hands…
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CVE-2026-98432: The Linux TCP Use-After-Free Flaw Explained
CVE-2026-98432 is a use-after-free in the Linux TCP stack that an AI research model turned into a root shell in under an hour, no login required. This guide explains the race in plain language, lists the first fixed kernel version per branch, and shows the update, reboot check,…
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Linux Filesystem Hierarchy Quiz: What Lives Where
How well do you know the Linux filesystem hierarchy? This 15-question quiz covers /etc, /var, /home, /usr, /bin, /dev, /proc, /sys, /run, /boot, /opt, /mnt, /media, /srv and more. Questions range from beginner to expert, with explanations for every answer. Finish it to earn a…
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Kali Purple Lab: Watch Suricata Catch a Live Attack
On my bench, one nmap service scan and one hydra burst against an isolated Kali Purple defender produced 2009358 and 2001219 alerts inside twenty seconds. This hands-on lab covers the VMware host-only setup, Suricata rules and HOME_NET tuning, both attacks, a field-by-field…
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Which Linux Apps Still Use GTK3? A Live Toolkit Audit
Three live distros, three package databases, one question: which installed apps still link GTK3? This audit runs apt, dnf and pacman reverse-dependency sweeps plus ldd proof on Mint 22.3, Fedora 44 and CachyOS, then sorts 15 apps into GTK3 holdouts, GTK4 movers and toolkit…
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Why Your Linux Packages Are Old: How to Check and Fix
Ubuntu 26.04 LTS ships fzf seven releases behind upstream, while Arch Linux sat at the newest tag on the same day. This date-stamped audit gives you the exact read-only commands to check package version lag on apt, dnf5, and pacman, then ranks every fix from doing nothing at all…
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Fastfetch vs Neofetch: The New Linux System Info Standard
Neofetch was archived in April 2024 with its final release dating to 2020, so this guide puts fastfetch through a real workout. I install it on Ubuntu, Fedora, and Arch, benchmark both tools on the same machine, and walk through JSONC configuration, the Media and Player modules,…
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Tributary: The GTK4 Rust Music Player for Rhythmbox Fans
Tributary is a pure-Rust GTK4 music player built around the classic Rhythmbox library view, with modern remote backends for Subsonic, Jellyfin, Plex and DAAP. I tested version 0.7.2 on Mint, Fedora and CachyOS: native install paths, the Flathub-absent Flatpak route, the…
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Linux Kernel Internals Quiz: syscalls, modules & cgroups
How well do you really know the Linux kernel? This 15-question quiz covers system calls, kernel modules, cgroups, namespaces, the scheduler, /proc and /sys, sysctl, boot images, and dynamic tracing. Questions range from beginner to expert, with explanations for every answer.…
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Linux 7.4 Features: Rust Replaces C, Faster Boot, HDMI 2.1
Linux 7.4 is not installable yet, but the merge window tells the story. I separate the Rust Binder deletion that removes 11,470 lines of C from the hype, explain why the 268-second boot fix is narrower than it sounds, and cover HDMI 2.1 defaults, EEVDF latency and test commands…
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15 Must-Have FOSS Apps to Replace Windows and Mac Software
Windows and macOS keep charging rent for software you could own instead. These 15 must-have FOSS apps cover office work, browsing, email, photos, video, passwords and notes, and each installs from your distro's store or Flathub in under a minute. Tested on Ubuntu, Fedora and…
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Kali Purple 2026.3: What It Is, What’s Inside, How to Get It
Kali Purple 2026.3 is the defensive flavor of Kali: over 100 blue-team tools, NIST CSF menus, and a SOC-in-a-box reference setup on one installer image. This review verifies the official ISO checksum, walks the toolset and menus, compares it with a self-built copy, and shows how…