# Add an host alias 
sshbook-add alias user@host

# Add an alias with the -Y X11 forward option
sshbook-add -o "-Y" local user@localhost

# Add a connection to an host that can be found in the HOSTNAME var
sshbook-add -s ENV['HOSTNAME'] local user

# Add a connection that by default executes ls
sshbook-add -c ls local user@localhost