Short for remote login, rlogin establishes a remote connection from your terminal to a remote machine.
syntax: rlogin [-8] [-E] [-L] [-ec] [ -l username ] hostname

-8 Pass eight-bit data across the net instead of seven-bit data.
-E Stop any character from being recognized as an escape character.
-L Allow the rlogin session to be run in "litout" mode.
-ec Specify a different escape character, c, for the line used to disconnect from the remote host.
-l username Specify a different username for the remote login. If you do not use this option, the remote username used is the same as your local username.
hostname The remote machine on which rlogin establishes the remote login session.

Example:
rlogin -l hope domain.com - would login as user hope to the domain domain.com.