Upgrade Debian 10 Buster to Debian 11 Bullseye: A Step-by-Step Guide

On on August 14th, 2021 the Debian project has finally released a stable version of Debian 11 Bullseye after over 2 years of development. This step-by-step tutorial is going to show you how to safely upgrade Debian 10 Buster to Debian 11 Bullseye from command line.