Practical Linux Tutorials and Command-Line Guides

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

Featured Articles

Using the rsync command to sync files and directories in Linux

Feb 23, 2026 • 7 min read

Rsync Command in Linux with Examples

Learn how to use the rsync command to sync files and directories locally and remotely. Covers common options, remote transfers, dry run, exclusions, and troubleshooting.

Aug 8, 2026 • 7 min read

How to Show Line Numbers in Vim and Vi

Turn on line numbers in Vim or Vi for the current session, set them by default in .vimrc or init.lua, and switch between absolute, relative, and hybrid numbering.

Sep 26, 2026 • 10 min read

Using the SSH Config File

Set up the SSH client config file to manage multiple remote connections with custom hostnames, users, ports, keys, and jump hosts, all without long command-line flags.

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Oct 7, 2026 • 10 min read • new • series

Bash Pattern Matching: =~ Operator and Regular Expressions

Match strings in Bash with globs, extglob, and the =~ regex operator. Use anchors, quoting, and BASH_REMATCH to test input and capture groups.

Bash terminal with the =~ operator, a *.log pattern, and a matching server.log filename

Oct 7, 2026 • 6 min read

unlink Command in Linux: Remove a Single File

Remove one file or symlink with unlink. See how it differs from rm, how hard links affect deletion, and how to fix common errors.

Using the Linux unlink command to remove a file from the command line

Oct 7, 2026 • 9 min read

How to Extract (Unzip) tar.gz Files in Linux

Extract (untar) tar.gz and tgz archives with the tar command. Covers extracting to a directory, pulling specific files, wildcards, stdin piping, and listing archive contents.

Extracting tar.gz files in Linux with the tar command

Oct 6, 2026 • 5 min read

How to Convert Integer into String in Python

Convert an int to a str in Python with str(), f-strings, and format(), add leading zeros, build binary or hex strings, and join a list of numbers.

Oct 6, 2026 • 5 min read

How to Convert Strings to Integers in Python

Convert strings to integers in Python with int(), handle invalid input, remove separators, and parse binary, octal, and hexadecimal values.

Oct 6, 2026 • 14 min read • new

How to Resize and Extend a Linux Partition and Filesystem

Extend a Linux partition and grow ext4, XFS, Btrfs, or LVM storage after a disk resize, with layout checks, safe ext4 shrink steps, and troubleshooting.

Partition and filesystem layers expanding into free space in a storage tray

Oct 5, 2026 • 14 min read

Linux ip Command with Examples

How to use the Linux ip command to show and assign IP addresses, bring interfaces up or down, and manage routes, with ip a and ip -br output explained.

Oct 5, 2026 • 9 min read • series

chown Command in Linux: Change File Ownership

Use the chown command in Linux to change file and directory ownership, including recursive changes, symbolic links, and practical ownership examples.

Oct 5, 2026 • 7 min read

How to Create a Directory in Linux: mkdir Command Examples

Create single, multiple, and nested directories in Linux with mkdir, set permissions with -m, and fix 'Permission denied' and 'No such file or directory' errors.