$ sudo adduser username
- Set a local password and user info
$ usermod -aG sudo username
- Test the user
$ su - username
- Still logged as 'username', create .ssh folder for 'username'
$ mkdir ~/.ssh
- Copy public key from a machine to the remote using another ssh account
$ scp id_rsa.pub validkey@ip:/tmp/.
- Add key to authorized keys ```$ sudo cat /tmp/id_rsa.pub >> /home/username/.ssh/authorized_keys"