SSH
1. Generate ssh key
ssh-keygen
// variation
ssh-keygen -t ras
2. Copy to server
// login to server
nano ~/.ssh/authorized_keys
3. Change SSH config
// edit config here
sudo nano /etc/shell/sshd_config
// after editing
sudo systemctl reload sshd
4. Create new user with sudo
$ adduser my-user-name
$ id my-user-name
$ usermod -aG sudo my-user-name
$ id my-user-name