Learn about 9 deprecated Linux networking commands, why they're outdated, and the modern replacements every Linux user and system administrator should know.

Learn how the Bash (!) character helps you rerun commands, reuse arguments, search history, negate conditions, and work more efficiently.

Learn how to use the watch command in Linux to monitor commands in real time. Explore syntax, options, and practical examples for system monitoring.

Linux command line can make tedious tasks quick and accurate. Have fun playing with words and characters using simple Linux commands and clever one-liners.

Learn how to use the Linux head, tail, and cat commands to view, inspect, follow, combine, and manage files with practical examples.

Learn how to use dmesg in Linux with practical examples to view kernel messages, find errors, monitor hardware, and diagnose driver issues.

Learn 20 essential DNF commands to install, update, remove, search, downgrade, and manage packages on RHEL, Rocky Linux, AlmaLinux, and Fedora.

Learn how to use Linux chattr command to protect important files and directories with immutable, append-only, and other filesystem attributes, with examples.

Learn how to use the usermod command in Linux with 16 practical examples for managing users, groups, UIDs, home directories, shells, passwords, and more.

Learn what the pwd command does in Linux, how it displays the current working directory, and how to use -L, -P, symlinks, and practical examples.

In this article, use choom, OOMScoreAdjust, MemoryMax, swap, and systemd-oomd on Linux so the OOM killer stops killing your critical apps.