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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Mar 9, 2026 • 7 min read

Find and Replace in Vim / Vi

Step-by-step guide to finding and replacing text in Vim using the :substitute command. Covers ranges, flags, regex, case sensitivity, and practical examples.

Jul 14, 2026 • 6 min read

less Command in Linux: Navigate and Search Files

How to use the less command in Linux to view files page by page, search for text, follow log files in real time, and navigate with vi-style key bindings.

Jul 27, 2026 • 6 min read

How to Install PHP on Ubuntu 26.04

Learn how to install PHP 8.5 on Ubuntu 26.04 with Apache or Nginx. Includes PHP-FPM setup, common extensions, and installing other PHP versions.

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Oct 15, 2026 • 8 min read

touch Command in Linux: Create Files and Update Timestamps

The touch command creates empty files and updates file timestamps in Linux. This guide covers access time, modification time, custom timestamps, and reference file usage.

Using the Linux touch command to create files and update timestamps

Oct 15, 2026 • 8 min read • new

How to Force git pull to Overwrite Local Files

Replace a local Git branch with its remote version safely using fetch and reset, with backup steps for commits, modified files, and untracked files.

Force a local Git branch to match the remote branch

Oct 14, 2026 • 9 min read

How to Use Linux Screen

Keep commands running after you disconnect from SSH with GNU Screen. Start, detach, reattach, list, and kill sessions, plus windows, scrollback, and .screenrc.

GNU Screen terminal multiplexer managing multiple sessions in Linux

Oct 14, 2026 • 8 min read • new

git switch: Switch and Create Branches

Switch Git branches, create new branches, track remote branches, and handle uncommitted changes with practical git switch examples.

A HEAD marker moving between two Git branch tracks with the git switch command

Oct 14, 2026 • 10 min read

tmux Command in Linux: Sessions, Windows, and Panes

The tmux command lets you run persistent terminal sessions with multiple windows and panes. This guide covers creating and managing sessions, splitting panes, copy mode, and configuration.

Using tmux to manage terminal sessions, windows, and panes in Linux

Oct 14, 2026 • 8 min read

How to Use Nano, the Linux Command Line Text Editor

Learn the essential nano commands and keyboard shortcuts: open, save, and exit files, search and replace text, copy and paste, and use sudo nano to edit system files.

Oct 12, 2026 • 9 min read • series

Bash Comparison Operators: Equal, Not Equal, Greater Than

Compare numbers and strings in Bash with -eq, -ne, -gt, == and !=. Covers not equal checks, greater-than tests, and when to use [ ], [[ ]], or (( )).

Bash comparison operators used in shell conditionals

Oct 12, 2026 • 6 min read

Hard Link vs Symbolic Link in Linux: Symlinks and Inodes Explained

Symlink vs hard link in Linux: a hard link is a second name for the same inode, and a symlink stores a path to another file. See when each one breaks and which to use.

Comparing hard links and symbolic links in Linux with inodes

Oct 12, 2026 • 10 min read • new

Best Terminal File Managers for Linux

Compare Midnight Commander, Yazi, ranger, lf, and nnn, with installation commands, screenshots, and practical advice for choosing a Linux terminal file manager.

Two terminal file browser panes with folders and a file being copied between them

Oct 11, 2026 • 11 min read • series

Bash Strict Mode: set -euo pipefail Explained

A practical guide to Bash strict mode: how set -e, set -u, set -o pipefail, and IFS change script behavior, why they catch silent failures, and when to turn them off.