Installation
All Ubuntu LTS 20.04 on Intel/AMD (codename Focal Fossa) distributions should be supported, prefered variant is Xubuntu:
The recomended way is to enter one command after another, do not copy them all at once. :)
sudo wget -O - http://dicaffeine.com/repository/dicaffeine.key | sudo apt-key add - echo "deb [arch=amd64] https://dicaffeine.com/repository/ bionic main non-free" | sudo tee -a /etc/apt/sources.list.d/dicaffeine.list sudo apt update sudo apt install -y dicaffeine
Update
Please use the standard system update tools, you can always update manualy using the console commands:
sudo apt update sudo apt upgrade -y sudo reboot