sudo apt install git -y
git config --global user.name 'nosmall'
git config --global user.email 'jirka@jiripocta.cz'
ssh-keygen -t ed25519 -C "jirka@jiripocta.cz"
Enter
Enter
Copy new public ssh key to github page, settings > SSH and GPG Keys (https://github.com/settings/keys)
cat ~/.ssh/id_ed25519.pub