SysAdmin

Environment variables play a significant role in setting up the system and shell configuration at the beginning of every shell session. This tutorial explains how to view, set, manage, and remove environment variables in Linux.

This article explains how to reinstall the latest package version using the --reinstall flag in Debian and Ubuntu.

While some Linux commands take input both from the standard input (stdin) and as a command-line argument, some are limited to take input only as an argument. To process input from stdin, those commands need to utilize the xargs command. This tutorial covers the most common uses of xargs in Linux.

By default in Linux, a command received through standard input writes directly to standard output. The tee command changes that behavior by allowing another command to use a file as the output. This tutorial lists ways in which you can use the tee command.

This guide lists all the steps necessary to install Ubuntu on your Raspberry Pi. This includes downloading an image, formatting your SD card or flash drive, and flashing the storage device. We also include some post-installation steps.

apt is an interactive command-line utility for managing deb packages. This tutorial will teach you how to use apt.

Deleting a file in Linux or any other OS does not actually remove the data from the drive. Learn how to use the shred command to permanently destroy sensitive data so that it cannot be recovered in this simple tutorial.

Use the diff --color command to change the color of the diff output. This guide teaches you how to compare files the easy way.

Samba is an open-source utility for Linux that enables file sharing between Linux machines and other operating systems. This tutorial teaches you how to install, configure, or uninstall Samba on Ubuntu.

This tutorial explains how to check the SELinux status and disable the service on CentOS and Rocky Linux..