root@juju-canonistack-machine-0:~# head -n 1 ~/.ssh/authorized_keys 
no-port-forwarding,no-agent-forwarding,no-X11-forwarding,command="echo 'Please login as the user \"ubuntu\" rather than the user \"root\".';echo;sleep 10" ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDB3vYzXQIyyT+IcG9tZucynedATycq+PqFWWdEMH+ZA0Fw/E3ysXlEak0sr+YCXxnXkLq+8dEIblsWkeYrdY+aNsbP/BpzGJMC74wyd5mGvLirWu6KKm4lknpX5pLEy2I0psKj6S3KSRifqu2SBJ5oGVsdUu6upni7ShOtj8MM4LlGGy/YyFBjn0x2hqcTHF30TfqjPDvrSzQ6yXtLqxbIweVmkfJ2AICReTPt7gcKQIf79dFsdTMu7OgyDYZejzwLCtvxlRLvhVQNNpDj1Hl+n6ec2RE7bqxIt7+GxaTypIfL//vtuPAMn8x6WzrCwoO9KZEf0I0J3UxPj/XixcQX Juju:juju-client-key