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
Tips to check Disk Space in Linux [10 Methods]
You can use different commands such as fdisk, parted, du, df, lsscsi, lsblk, dmesg, blockdev to check disk space in Linux. Most of these commands will display …
Step-by-Step: Create LVM during installation RHEL/CentOS 7/8
Step by step screenshots to create LVM during installation using Red Hat or CentOS 7/8 ISO. how to create lvm in redhat linux 7 step by step
9 easy steps to create custom ISO RHEL/CentOS 8
To create custom ISO in RHEL/CentOS 8, create a kickstart file and modify the isolinux.cfg for boot menu. You can also minimze the package list and update …
6 Tools making Automation Testing easy in Linux
The QA automation testing tools mentioned in this article enable the deployment of tests integrated with the DevOps workflow. They support continuous testing …
SSH port forwarding | SSH Tunnel (Forward & Reverse)
Configure SSH Port forwarding tunneling between local and remote host in Linux. Example SSH session to forward port 8080 with ssh connection RHEL/CentOS
5 practical examples to list running processes in Linux
How to list processes by user and name in Linux? How to check if process is running by pid? How to check process status? which command is used to kill a …
5 easy & useful ways to check Linux kernel version
In this tutorial I will share multiple commands and methods you can use to check the Linux kernel version. The recommended method would be uname which works …
How to properly remove old kernels RHEL/CentOS 8
You can now use dnf command to remove old kernels from RHEL/CentOS 8 Linux. package-cleanup doesn't work any more. Use oldinstallonly with installonly_limit
5 simple steps to create shared folder Oracle VirtualBox
How to create shared folder using Oracle VirtualBox with Linux Operating System? Can I share a folder from Windows host to Linux OS inside Oracle Virtual Box?
5 easy steps change grub2 background image splash screen
Steps to change grub2 background image in Linux. The steps are valid for both legacy and UEFI BIOS. Use any JPE/JPEG or PNG image to set your own boot loader …
Step-by-Step: Upgrade multiple HPE VC firmware with SUM
Step by step guide to upgrade multiple HPE VC firmware (Virtual Connect) using Smart Update Manager. Perform parallel upgrade of the VC using SUM.
6 simple methods to check if ipv6 is enabled in Linux
How to check if IPv6 is enabled or disabled in my Linux server. Check for any process listening on IPv6 socket using netstat, lsof or ss command
6 practical examples of yum history to rollback updates and patches
Detailed step by step guide to rollback yum and dnf transactions on Linux server using yum history command. You can undo, redo or completely rollback the system …
7 tools to detect Memory Leaks with Examples
How to detect, capture and monitor memory leak in various applications such as C, C++ or in Linux process. use valgrind, core dump to capture leak information
Easy steps to change default kernel version RHEL/CentOS 8
Step by step instructions to change default kernel from one version to another in RHEL/CentOS 8. You can change from newer to older or vice versa kernel version …