How to Create a diff of two files and patching

In several situations or cases, we need to identify the differences between files and patch them, especially when updating configuration files, applications or patches, etc. So, when we start thinking about our day-to-day communication with the Linux operating system,...
How to Setup a Firewall with UFW on Debian 10 Linux

How to Setup a Firewall with UFW on Debian 10 Linux

Nowadays, a Firewall is an essential utility and property of any system for security; by default Debian Operating system having a firewall configuration tool named UFW (Uncomplicated Firewall). UFW is a user-friendly front-end tool to manage iptables firewall rules....