Learn Linux

I have seen people using the sudo command in Linux but I don’t understand why. What is the sudo command used for? In every Linux system, there is a user called ‘root’ also known as the administrator or superuser. This user has the highest level of control over the operating system. The term ‘root’ originates … Read more

Learning how to use the Linux operating system can be a complex journey, especially for beginner system administrators. Two fundamental commands that you will encounter while using Linux are sudo and su. Understanding the difference between the sudo and su commands is important for you to follow Linux system security best practices. This article will … Read more

Renaming files in Linux is a fundamental skill that every Linux user should have. Whether you are organizing your files, automating scripts, or managing servers, this is important knowledge to have. In this tutorial, we will explore the mv command and other techniques to rename files using the Linux command line. Rename a Single File … Read more

Use this cheatsheet to find out the meaning of a given chmod command. Understand how each command translates into filesystem permissions. The chmod command is used to set permissions for files and directories in a Linux system. It supports an octal permission format that is translated into read (r), write (w) and execute (x) permissions … Read more

The tail command is a very useful Linux command when working with files. Do you want to know how to use it at its best? Keep reading 🙂 The Linux tail command allows to see the last lines of a text file in Linux. A scenario in which this can be extremely useful is when … Read more

At some point every Linux user has to modify a file and what better editor to do it than vim, its commands allow you to do pretty much anything you want. What is Vim in Linux? Vim (that stands for Vi iMproved) is the main text editor available on the Linux Command Line Interface (CLI) … Read more

I have heard people asking what is the difference between grep and find multiple times in the last few years. It seemed obvious to me, but maybe it’s not if you are getting started with Linux. What is the difference between the grep and find commands? Find is a utility to search for files and … Read more

In this tutorial you will learn how to find the port of a process running on a Linux system. This is a very common thing we need to know when we manage applications on Linux, especially if they have been configured by someone else. How do you find the port of a process running on … Read more

Are you using Linux and you have seen the “Command Not Found” error while trying to execute a command? It’s time to find out why. We will look at this error together and understand how to fix it. What is the cause of the command not found error? The “Command not found” error is caused … Read more

What is YUM? Yum is the main tool used on the Red Hat Enterprise Linux distribution to manage software packages. It’s not only used on Red Hat but also on CentOs and Fedora. The way it works is consistent across those Linux distributions, so this tutorial won’t refer specifically to any of the three distributions. … Read more