Recent Posts
How to Check the Linux Distribution, Version, Kernel, and Architecture
Learn how to identify a Linux distribution and version with /etc/os-release, then check the running kernel and CPU architecture with hostnamectl and uname. The guide also covers scripts, legacy systems, containers, WSL, and chroot environments.
How to Change the System Language and Locale on Rocky Linux
Learn how to check and change the system-wide language and locale on Rocky Linux with localectl and glibc language packs. This guide also explains session-only changes, LANG and LC_* precedence, and troubleshooting for broken Korean characters.
How to List Installed Packages on Ubuntu with apt and dpkg-query
Learn how to list installed Deb packages on Ubuntu with apt and dpkg-query, verify package status and versions, identify file ownership, and separate manual from automatic installations. The guide also covers inventory exports and Snap packages.
Ubuntu LTS Lifecycle
Learn how Ubuntu LTS support progresses from five years of standard security maintenance to ten years with Ubuntu Pro ESM and up to fifteen years with the Legacy add-on. The guide also lists lifecycle dates and shows how to check a system's coverage.