Recently, I encountered an issue on one of my mail servers where the Postfix mail system failed to send email.…

In Windows, sometimes a service may become unresponsive or stuck and cannot be stopped using the usual net stop or…

Sometimes, you need to change the first line in a file on your Linux system. This might be to update…

In this article, we will talk about what a swap file is, the different types of swap, and how to…

Welcome to the Terraform Multiple Choice Questions (MCQ). This quiz is designed to help you test your knowledge of Terraform,…

Recently, I installed the sendemail program on my Ubuntu server. When I tried to send an email over SMTP, I…

Terraform is a tool that helps you manage your cloud infrastructure. It keeps track of the resources it creates using…

This guide will show you how to install MySQL on Ubuntu 24.04 using official PPA. MySQL is a popular database…

A port is a communication endpoint in a network that allows a computer to distinguish between different kinds of traffic…

Imagine you have a big text file with lots of lines, like a list of items in a shopping list…