This is an old revision of the document!

Mint 20.3 to 21 upgrade

sudo sed -i 's/una/vanessa/' /etc/apt/sources.list
sudo sed -i 's/una/vanessa/' /etc/apt/sources.list.d/official-package-repositories.list 
sudo sed -i 's/focal/jammy/' /etc/apt/sources.list.d/official-package-repositories.list 
sudo apt update
sudo apt upgrade
sudo apt dist-upgrade