Basics

The screen command is a very common command used on Linux to launch and arrange multiple terminal shells within one single shell. Screen is most of the time used for…

This is the set of exercises following the article on Linux Processes Explained. If you carefully read the article and understood the principles detailed inside, you should be able to…

As a Linux system administrator, there are many different ways to transfer files, securely or not, between two different hosts. During your day job, you may be asked to perform…

This tutorial gives details about what processes are, how they are used and how they can be managed on Linux. As a system administrator, you have probably interacted with processes…

This tutorial focuses on setting up and configuring a SSH server on a Debian 10 minimal server SSH, for Secure Shell, is a network protocol that is used in order…

This tutorial details access control lists on Linux, what they are used for and how to manage them. As a system administrator, you are probably spending quite some time configuring…

On Linux, it is essential to have some basics when it comes to changing the timezone. The timezone is a parameter set at the installation stage and that determines the…

The source command on Linux is a pretty popular function run by system administrators daily. But what is the function of the source command? Used to refresh the current shell…

This is the set of exercises following the article on Linux Permissions. If you carefully read the article and understood the principles detailed inside, you should be able to answer…

This tutorial is a complete guide on understanding cron on Linux as well as the role of the crontab file. As a system administrator, it is very likely that you…