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
331 articles
Featured guides in this category
Hand-picked, most-cited tutorials — start here if you're new.
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: …
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 …
![How to install Anydesk on AlmaLinux 8 [Step-by-Step]](/install-anydesk-on-almalinux-8/install_anydesk_hu_1f4ec917374ba52d.webp)
How to install Anydesk on AlmaLinux 8 [Step-by-Step]
Step by step instructions to install anydesk on almalinux 8 with screenshot and examples
Downgrade Ubuntu to previous version?
Step by Step instructions to download Ubuntu to previous release
How to Refresh Network Settings in Ubuntu
Learn how to refresh network settings in Ubuntu after IP address, route, DNS, DHCP, Netplan, NetworkManager, or systemd-networkd changes. Includes safe …
How to Configure VNC Server on Ubuntu
Learn how to configure a VNC server on Ubuntu with TigerVNC, XFCE, a per-user VNC password, localhost-only binding, SSH tunneling, firewall checks, and a …
OpenLDAP Tutorial for Beginners - Install, Configure, Replicate
Free, hands-on OpenLDAP tutorial - install on RHEL/CentOS/Rocky/Ubuntu, configure TLS, set up master-slave and multi-master replication, integrate Linux …
OpenSSL & PKI Certificates Tutorial for Beginners
Complete OpenSSL and PKI tutorial - generate keys, build a Certificate Authority, issue SAN and ECC certificates, configure mTLS, renew and revoke certificates. …
HackerRank Solution: Map Reduce Advanced - Count number of friends
The task is to count the number of friends each person has using a MapReduce framework. The input consists of multiple lines, each containing a pair of friend
Cannot assign requested address [SOLVED]
The "Cannot Assign Requested Address" error is quiet common in the network community and can be seen in various network-related and application specific
How to Install a Specific Version with APT
Learn how to install a specific package version with apt or apt-get on Ubuntu and Debian, list available versions, simulate installs safely, handle dependency …
How to Create Dropdown List in SoftMaker PlanMaker
In this tutorial we will be covering different methods to create dropdown list in SoftMaker PlanMaker. Now this article assumes that you already have
How to upgrade CentOS 7 to 8 PROPERLY [100% Working]
The process of upgrading from CentOS 7 to CentOS 8 is not straightforward. There are significant differences between the two versions, including the
SCP vs RSYNC - Which one to use in Production?
This tutorial covers the basics and differences between SCP and Rsync, when to use each, their performance, security considerations, practical examples, and …
3 Simple Methods to Install HPLIP on Ubuntu
This tutorial will guide you through step by step instructions to install HPLIP on Ubuntu, covering prerequisites, installation methods, fixing common issues, …
How to Install and Configure PostgreSQL on Ubuntu?
This tutorial guides you through step by step instructions to install PostgreSQL on Ubuntu, including system preparation, secure installation, basic …
How to install ImageMagick on Ubuntu?
This tutorial will guide you through step by step instructions to install ImageMagick on Ubuntu, covering various methods like APT and compiling from source. …
Steps to Install Darktable on Ubuntu [4 Methods]
In this tutorial, we'll guide you through steps to install Darktable on Ubuntu, a powerful photo editing tool. We'll cover different methods including APT, PPA, …
How to extract specific file, link & folder from tar.gz
In this tutorial, we'll explore how to extract specific files, folders, and symbolic links from a tar.gz archive, using straightforward command-line techniques …