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On Linux, there are many ways to change the current user for the session. If you are not using a graphical interface, you might wonder how you can change the…

This tutorial focuses on user administration on Linux hosts, managing users and groups. As a system administrator, you are manipulating users and groups all the time. You may be required…

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 tutorial focuses on the best Linux books that you should read to become a professional system administrator. First released in September 1991, the Linux kernel was designed with home…

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…

This tutorial focuses on installing InfluxDB 1.7 on Docker for Linux instances. Built in 2013 by InfluxData, InfluxDB is by far one of the most used time series databases nowadays.…

This tutorial focuses on how to install a NGINX web server on Centos 8 hosts. NGINX is probably one of the most popular web servers in use nowadays. Pronounced “engine-x“,…

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 explains how to install Apache on CentOS 8 and how to configure virtual hosts easily From all the web servers available, the Apache Web Server is probably one…

This tutorial focuses on the ways to add users and delete users on CentOS 8 operating systems. When starting with a fresh CentOS 8 instance, adding and deleting users is…