SysAdmin

This article explains the concept of reverse DNS and its uses. See how to perform rDNS lookup in Windows and Linux.

The Linux w command allows you to list the information for currently logged in users. learn how the w command works and how to change the output using different options in this tutorial.

MySQL string functions allow you to manipulate character string data using the SELECT statement. Learn to use MySQL string functions with this comprehensive tutorial.

The built-in Linux watch command allows you to repeatedly run a user-defined command in regular time intervals. Learn how to use it in this tutorial.

You can change the hostname in Debian 10 (Buster) as the root user by using the built-in hostname command or editing related system files. learn how to change your hostname in this step-by-step tutorial.

Public Key Authentication is the secure way to connect via SSH. Through this guide, you will learn how to generate a key pair and use them to connect to a remote server via SSH.

MySQL is the most popular open-source relational database management system. This tutorial will help you identify and fix the cause of the 'can't connect to local MySQL server through socket' error.

This tutorial explains how to use the chgrp command to change a file's group ownership. Learn to use the command and see practical examples that showcase what the command does.

This article helps you understand what git is, guides you through its features, use cases, and the way git works.

Need to transfer files between two machines securely? Try the SSHFS client, which mounts a remote file system directly to your local machine and uses the SSH file transfer protocol.