Practical Linux Tutorials and Command-Line Guides

Search hundreds of step-by-step tutorials for Bash, Ubuntu, networking, security, and more.

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Switching users with the su command in Linux

Aug 11, 2026 • 9 min read

su Command in Linux: How to Switch Users

Use the su command to switch users, open a root login shell, and run commands as another account. Includes options, sudo su, troubleshooting, and examples.

ln command in Linux for creating symbolic links

Jul 31, 2026 • 11 min read

How to Create Symlinks in Linux with ln

The ln command creates symbolic links on Linux, giving you a stable name that points to a moving target. This guide covers creating, updating, and cleaning up symlinks, plus the -sfn pattern used for atomic deploys.

Apr 22, 2026 • 4 min read

tee Command in Linux with Examples

Use the tee command to save command output to files while still printing it in the terminal, append logs, write to multiple files, and handle sudo-protected paths.

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Aug 31, 2026 • 10 min read • new

What Is .bashrc? When It Runs and What to Put in It

~/.bashrc controls aliases, functions, prompts, and other interactive Bash settings. See when it runs, what belongs inside it, and how to reload changes.

A .bashrc configuration file loading settings into an interactive Bash shell

Aug 31, 2026 • 5 min read

How to Create a tar.gz File in Linux

Create tar.gz and tgz files in Linux with the tar command. Covers directories, wildcards, exclusions, archive paths, and the -C option.

Creating a tar.gz archive file in Linux using the tar command

Aug 31, 2026 • 13 min read

Best Linux Distros for Every Use Case in 2026

Compare the best Linux distros for beginners, gaming, servers, and security testing, with current versions and a straight answer on which one to install first.

Linux desktop environments and terminal panels arranged around a modern workstation

Aug 30, 2026 • 7 min read • series

How to Create Bash Aliases

Bash aliases let you shorten long commands into short, memorable shortcuts. This guide covers alias syntax, persistent aliases in .bashrc, and bash functions for shortcuts that take arguments.

Aug 30, 2026 • 9 min read

wc Command in Linux: Count Lines, Words, and Bytes

The wc command counts lines, words, characters, and bytes in files or standard input. This guide covers common options with practical pipeline examples.

Using the Linux wc command to count lines, words, and bytes

Aug 30, 2026 • 8 min read

reboot Command in Linux: Restart with systemctl and shutdown -r

Three commands cover common Linux reboot scenarios: reboot for an immediate restart, systemctl reboot for the systemd path, and shutdown -r for scheduled restarts with user notifications.

Rebooting a Linux system from the command line using systemctl and shutdown

Aug 28, 2026 • 12 min read

Linux Kill Process: Stop Processes by PID or Name

Stop stuck programs in Linux with kill, killall, pkill, and xkill. Find the PID, send SIGTERM first, and use SIGKILL only when the process refuses to exit.

Aug 28, 2026 • 10 min read • series

df Command in Linux: Check Disk Space Usage

Check disk space usage in Linux with the df command. Human-readable and fixed block sizes, filesystem types, inode usage, custom output fields, and df vs du.

Aug 28, 2026 • 9 min read • series

How to Add a Directory to PATH in Linux

Add a directory to the PATH variable in Linux, temporarily or permanently, covering ~/.local/bin, custom binaries, and system-wide changes for all users.

Adding a directory to the PATH environment variable in Linux

Aug 28, 2026 • 13 min read

traceroute Command in Linux

Trace the path packets take to a host, read every field of the traceroute output, decode hops that show asterisks or !X, and map Windows tracert flags to Linux.