Recently, I encountered an issue on one of my mail servers where the Postfix mail system failed to send email.…
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Sometimes, you need to change the first line in a file on your Linux system. This might be to update…
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…
When working with Docker containers, you might need to know the IP address of a specific container. This can be…
This guide will show you how to create a new user in MySQL and give them the ‘GRANT OPTION’ privilege.…
In system administration, there is a powerful tool to schedule tasks: crontab. With crontab, you can run scripts and commands…