Introduction The ifconfig command line utility is a powerful tool in Linux that allows users to configure and display network interface information. With ifconfig, you can manage network settings, view IP addresses, netmasks,…

Introduction Managing user accounts is an essential task for Linux system administrators. Occasionally, you may need to remove users who are no longer active or require access to your system. Removing users involves…

Introduction IP address management (IPAM) plays a vital role in the efficient functioning of any network infrastructure. It allows network administrators to organize, monitor, and allocate IP addresses effectively. In this article, we…

Introduction Compressed files are a common way to bundle multiple files into a single archive, making it easier to transfer and store large amounts of data. In Linux, there are various compression formats…

Introduction In the Linux operating system, file permissions play a crucial role in maintaining security and controlling access to files and directories. The chmod command, short for “change mode,” allows users to modify…

To get the size of a directory in Linux, you can use the du command. The du command stands for “disk usage” and is used to estimate file and directory space usage.  Here’s…

In this short tutorial we will show you how to add an ordinary user to sudoers group on Debian 11 operating system. Introduction If we have a freshly installed Debian 11 operating system,…

On this short tutorial, we will learn how to change hostname on CentOS 7 operating system. Introduction As a sysadmin, we are sometimes asked by our user to reset the hostname of a…