Whether you are a Linux system administrator or a DevOps engineer, you spend a lot of time tracking performance metrics on your servers. You may sometimes have instances that are…

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…

On Linux, as a system administrator, you often want to have a complete list of all the users and all the groups on your host. It is quite crucial for…

This tutorial focuses on how to find files on Linux using the find and the locate command. As a system administrator, it is a very common task to look for…

For a system administrator, it is very common to perform input or output redirection during its daily work. Input and output redirection is a very powerful tool, allowing you to…

This tutorial focuses on how to create swap space on Debian 10 via a swap file or a swap partition on your hard drive. On a Linux system, it is…

This guide details all the steps needed to install and configure the Blackbox Exporter with Prometheus. As a system administrator, or as an application developer, you are often issuing ping…