Practical Linux Tutorials and Command-Line Guides

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

Featured Articles

Apr 4, 2026 • 6 min read

Bash Functions

How to define and use Bash functions, pass arguments, return values, and apply best practices for writing cleaner and more maintainable scripts.

Switching users with the su command in Linux

May 2, 2026 • 7 min read

su Command in Linux: Switch User

The su command in Linux switches users in the current session and runs commands with another user's privileges. Examples, options, and a sudo vs su comparison.

Apr 24, 2026 • 5 min read

gzip Command in Linux

Step-by-step examples for compressing and decompressing files with the gzip command in Linux, covering the most useful options.

Linuxize Weekly Newsletter

A quick weekly roundup of new tutorials, news, and tips.

Latest Articles

View all articles

Aug 5, 2026 • 11 min read

mv Command in Linux: Move Files and Directories

Move and rename files and directories in Linux with the mv command, including overwrite prompts, backups, the -T option, and cross-filesystem moves.

Move Files and Directories in Linux - mv Command

Aug 5, 2026 • 7 min read

How to Save a File and Exit Vim / Vi

Save a file and quit Vim or Vi with :w, :wq, :q!, :x, ZZ, and ZQ. This guide explains the common save, exit, discard, and read-only file commands.

Aug 5, 2026 • 9 min read

cd Command in Linux: Change Directories

Change directories in Linux with cd, covering absolute and relative paths, home and parent shortcuts, symbolic links, CDPATH, and common errors.

Aug 4, 2026 • 6 min read

Install deb Files on Ubuntu: apt, dpkg, and gdebi

Install local .deb files on Ubuntu with apt, dpkg, or gdebi. Fix dependency errors, inspect packages, install via GUI, and remove them safely.

Aug 4, 2026 • 7 min read

Linux Folder Size: How to Check File and Directory Sizes

Check folder and file sizes in Linux with du. Compare directory totals, rank subdirectories, exclude paths, and check free space with df.

Aug 4, 2026 • 8 min read • new

Regular Expressions Explained: How Regex Patterns Work

Regular expressions explained from the ground up: how anchors, character classes, quantifiers, and groups build patterns that work in grep, sed, and awk.

Regex matching lens highlighting text and regular expression symbols

Aug 4, 2026 • 8 min read

zip Command in Linux: Zip Files and Directories

Create ZIP archives in Linux with the zip command. Zip directories recursively, exclude files, add a password, and split large archives.

Aug 2, 2026 • 6 min read • new

git worktree: Work on Multiple Branches at Once

Use git worktree to check out multiple branches in separate directories, handle urgent fixes without stashing, and clean up linked worktrees safely.

Git worktree command connecting one repository to parallel workspaces

Aug 1, 2026 • 12 min read

git log Command: View Commit History

Browse commit history with git log: show the last commit, filter by author, date, or keyword, search by code change, track a file across renames, and read branch graphs.

git log command showing commit history in Git

Aug 1, 2026 • 4 min read

whoami Command in Linux: Display the Current User Name

The whoami command shows the current effective username on Linux. This guide explains syntax, practical examples, shell script usage, and how it compares to id -un and $USER.