Upgrade Debian 10 to 11 (speedrun)

This is not supposed to be a quide, just a semi-public documentation of an update I performed on one of my servers.

sudo update and upgrade

upgrade nginx has been pending

restarted automatically

remove deb-src because not needed

changing debian mirrors

sudo apt update

sudo apt autoremove

edit sudo vi sources.list

nginx.list taky

update

upgrade without new pkgs