How to kill a process in Linux from the command line
In Linux, managing running processes can help maintain system health and performance. Sometimes, you might need to terminate a process to free up...
How to use the Linux dig command
The dig command, short for domain information groper, is a powerful network tool for querying domain name system (DNS) servers. It helps diagnose and...
How to use tmux for terminal multitasking
A terminal multiplexer, or tmux, is a command-line tool that lets you manage multiple terminal sessions in a single window. With tmux, you can split...
How to Install and Set Up Ubuntu Mail Server
Having your own email server is a great idea for any medium-sized company. With this, all the traffic is controlled, and we can define the rules...
How to change hostname on CentOS 9 Stream: 3 simple methods explained
Managing multiple servers may be challenging, which is where hostnames can prove to be useful.Hostnames enable users to name their servers and...
How to change a hostname in Linux
A Linux hostname identifies systems within a network, enabling them to identify and communicate with one another correctly. Assigning a unique...
How to List Installed Packages on Ubuntu 2026
As a server administrator, understanding how to list software packages installed in an Ubuntu system is crucial. It is useful for various tasks, such...
How to use the bash for loop: Syntax and examples
A Bash for loop is a statement in the Bash programming language that allows a code or script to run repeatedly. It enables you to finish repetitive...
How to check your Ubuntu version using GUI, terminal and Hostinger VPS panel
Checking your system’s Ubuntu version is crucial to ensure compatibility before installing software or deploying an application. It also helps...