rlogin internet.address [-l username]
Rlogin is like telnet, except that it can only be used for remote shell login. It is better to use rlogin for remote logins than telnet because telnet is not really suited very well for remote logins, however rlogin is. Rlogin takes the following option:

-l username
This specifies the username that you are logging in as on the remote machine. By default rlogin assumes you have the same username on the remote machine as you do on the local machine.

Examples:
  1. Remote login to judy:
    rlogin judy.indstate.edu
    or
    rlogin judy

  2. Remote login to judy as bubba:
    rlogin judy -l bubba