CODE EXAMPLE FOR CSS

Failed to start ssh.service: Unit ssh.service not found.

sudo apt-get install openssh-server
# Source
# https://unix.stackexchange.com/questions/520341/ssh-installed-but-i-get-the-error-failed-to-start-ssh-service-unit-ssh-service

# start SSH
sudo systemctl start ssh

# connect host server
sudo root@server-address -p password
  
exit