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Browse all Linuxize tutorials, guides, and references.
ls Command in Linux: List Files and Directories
The ls command lists files and directories in Linux. See how to use ls -l, ls -al, hidden-file options, sorting, and other practical combinations.
How to Set Up Automatic Kernel Updates on Linux
Set up automatic, rebootless Linux kernel updates with live patching from Canonical Livepatch (Ubuntu Pro), and learn when unattended upgrades are enough.
How to Fix the WordPress White Screen of Death
Troubleshoot the WordPress White Screen of Death by using Recovery Mode, disabling plugins and themes, checking PHP errors, raising memory limits, and restoring access.
What Is an SSL/TLS Certificate and How Does It Work?
An SSL/TLS certificate proves a website's identity and encrypts traffic between the browser and the server. This guide explains how certificates work, what they contain, and the types available.
How to Use OpenSSL: Generate Keys, Certificates, and Test TLS
Practical OpenSSL guide for Linux: generate private keys, create CSRs and self-signed certificates, convert formats, inspect certificates, and test TLS connections.
npm Command: Install and Manage Node.js Packages
This npm command guide covers project setup, local and global package installs, npm ci, updates, dependency removal, scripts, and one-off package runs.
Fix "sudo: command not found" on Linux
How to fix the 'sudo: command not found' error on Linux by installing the sudo package, adding your user to the right group, and recovering from a broken PATH.
Podman vs Docker: Differences and Migration Guide
This guide compares Podman and Docker across architecture, rootless containers, systemd integration, Compose workflows, image builds, and migration planning.
How to Back Up and Restore MySQL Databases with Mysqldump
Step-by-step guide to backing up and restoring MySQL and MariaDB databases using the mysqldump utility. Covers single and full backups, compressed backups, restoring dumps, and automating backups with cron.
Grep Multiple Patterns: Match Strings, Words, and Regex
Search for multiple patterns or strings at once with grep using the -e flag, fixed-string matching, alternation, and pattern files.
chgrp Command in Linux: Change File Group Ownership
The chgrp command changes the group ownership of files and directories in Linux. This guide covers syntax, recursive changes, symlink handling, and practical examples.
dpkg Command in Linux: Install and Manage Debian Packages
Use dpkg to install, remove, query, and inspect Debian packages on Ubuntu, Debian, and other Debian-based distributions.
How to Pass Arguments to a Bash Script
This guide explains how to pass arguments to Bash scripts, read positional parameters, loop over $@, set defaults, validate input, and parse flags with getopts.
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.
Bash source Command: Load Scripts and Variables
The Bash source command executes a file in the current shell environment, making its variables and functions available to the calling script. This guide covers syntax, common uses, and practical examples.
CPU Info on Linux: Check CPU Details from the Command Line
Two commands give you everything about your CPU on Linux: /proc/cpuinfo for raw per-core details, and lscpu for a readable summary. See how to use both.
tr Command in Linux: Translate, Delete, and Squeeze Characters
The tr command translates, deletes, and squeezes characters from standard input. This guide covers tr syntax, character sets and ranges, case conversion, removing line endings, and practical pipeline examples.
Understanding the /etc/fstab File in Linux
The /etc/fstab file defines how filesystems and storage devices are mounted at boot. This guide explains the fstab format, field meanings, mount options, and how to add new entries safely.
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.
iptables Command in Linux: Manage Firewall Rules
Manage Linux firewall rules with iptables. This guide covers tables and chains, listing rules, allowing and blocking ports and IP addresses, setting default policies, and saving rules across reboots.
