Displays information about a user on a specified system running the Finger service. Output varies based on the remote system. ...

Displays information about a user on a specified system running the Finger service. Output varies based on the remote system.  FINGER [-l] [user]@host [...]    -l        Displays information in long list format.   user      Specifies the user you want information about. Omit the user             parameter to display information about all users on the             specifed host.   @host     Specifies the server on the remote system whose users you             want information about.