Install Whois on Ubuntu/Debian Linux What is Whois? whois is a command-line utility that allows you to look up...
Set Up OpenVPN Server on Ubuntu 22.04 LTS In 5 Minutes Ubuntu is an open-source Linux operating system that...
How to add swap to AWS EC2/Lightsail Amazon Linux instance Amazon EC2/Lightsail Amazon Linux instances do not come with...
How to Upgrade OpenSUSE 15.3 to 15.4 using the CLI Upgrading between major versions of Linux can be a...
DNS Settings to Avoid Email Spoofing and Phishing for Unused Domains Email spoofing and phishing are two of the...
PHP Warning: Constant ABSPATH Already Defined in wp-config.php When using WordPress, a common warning experienced is the PHP Warning:...
How to Save a File in Vim/Vi Without Root Permission with Sudo If you are working in Vim/Vi and...
How to Install and Upgrade OpenSSH Server on FreeBSD OpenSSH is an open source implementation of the Secure Shell...
How to Upgrade from Ubuntu 20.04 LTS to 22.04 LTS Ubuntu is popular Linux-based operating system for your computer....
Fixing “bash: add-apt-repository: command not found” Error on Ubuntu/Debian Linux Trying to add a new repository on Ubuntu or...
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