Unattended ssh setup

# On the local machine the command below creates a public key in .ssh/id_rsa.pub
ssh-keygen -t rsa

# Copy this to the remote server 
scp .ssh/id_rsa.pub user@remote-ip:/home/tayhimself/.
# ssh in to the remote server and cd into the home dir
cat id_rsa.pub >> .ssh/authorized_keys

# OR 
# do it in 1 step
cat ~/.ssh/id_dsa.pub | ssh yourremotelogin@sshserver 'cat >> .ssh/authorized_keys'

#delete the pub key
shred -u id_rsa.pub

#You can copy the config file to change user and give the remote server a shortcut name
# In your .ssh/config on the local machine

Host backup
  HostName 10.0.0.1 #your backup server
  User root

# now you can type ssh backup and you'll be all set