Category

Linux Tutorials and Command Line Guides

Learn Linux with step-by-step tutorials, command line examples, and system administration guides for Ubuntu, RHEL, CentOS, and more.

Welcome to the Linux tutorials section, your complete resource for mastering Linux commands and system administration.

This category covers everything from basic commands to advanced system-level operations across multiple distributions such as Ubuntu, RHEL, and CentOS.

Linux is the backbone of modern infrastructure, and understanding it is essential for DevOps, cloud computing, and system administration. You may also explore System Administration and Security for advanced topics.

What you will learn

  • Essential Linux commands and tools
  • File system and process management
  • User and permission management
  • Real-world troubleshooting techniques

Ideal for

  • Beginners learning Linux
  • System administrators
  • DevOps engineers

332 articles

Hand-picked, most-cited tutorials — start here if you're new.

How do I install the Linux library libc.so.6

How do I install the Linux library libc.so.6

In this tutorial we learn how do I install the linux library libc.so.6. There are 3 possible scenarios: …

By Omer Cakmak · 5 min read
How to check the lock status of any user account in Linux

How to check the lock status of any user account in Linux

In this article I will share different methods to check the lock status of a user in Linux or Unix …

By Deepak Prasad · 4 min read
How to install Anydesk on AlmaLinux 8 [Step-by-Step]

How to install Anydesk on AlmaLinux 8 [Step-by-Step]

Step by step instructions to install anydesk on almalinux 8 with screenshot and examples

By Deepak Prasad · 3 min read
Downgrade Ubuntu to previous version?

Downgrade Ubuntu to previous version?

Step by Step instructions to download Ubuntu to previous release

By Omer Cakmak · 5 min read

Install Oh My Zsh on Linux [Step-by-Step]

Step by Step instructions to install Oh My Zsh on different Linux distributions such as Ubuntu, Red Hat, CentOS, Debian, OpenSuSE, Arch Linux

By Omer Cakmak · 4 min read · linux

bash: curl: command not found

The most common causes for bash: curl: command not found error is either curl package is not installed or the PATH variable does not contain the path to curl …

By Omer Cakmak · 3 min read · linux

Install FFprobe and FFmpeg on Ubuntu

Step by Step isntructions to install ffprobe and ffmpeg in Ubuntu using 3 different methods

By Omer Cakmak · 3 min read · linux

Install R on Rocky Linux 8 & 9

Step by Step instructions to install R Programming Language in Rocky Linux. Download and Install specific version of R language

By Omer Cakmak · 5 min read · linux

Show Line Numbers in Vim [Absolute, Relative, Hybrid]

vim relative line numbers active using :set relativenumber and :set rnu. relative line numbers inactive using :set norelativenumber and :set nornu. relative …

By Omer Cakmak · 3 min read · linux

Install Visual Studio Code Rocky Linux 9

Step by step instructions to install Visual Studio Code on Rocky Linux 9. 4 different methods to install and setup Visual Studio Code

By Omer Cakmak · 4 min read · linux

How to List Users in Linux (Complete Guide)

Learn how to list users in Linux using commands like getent, /etc/passwd, compgen, who, and id. This guide explains multiple practical methods to view all …

By Omer Cakmak · 13 min read · linux

How to Add User to Sudo Group in Linux

Learn how to add a Linux user to the sudo group on Ubuntu and Debian, use the wheel group on RHEL-based systems, verify sudo access, and avoid confusing …

By Omer Cakmak · 5 min read · linux

pkill -P $$ - Kill subprocess in Linux

pkill -P $$ is used to match only child processes of the given parent where $$ is the process of the current process

By Omer Cakmak · 5 min read · linux