This connectivity command 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; not supported on all remote systems.
user
Specifies the user you want information about. Omit the user parameter to display information about all users on the specified host.
@host
Specifies the host name or the IP address of the remote system whose users you want information about.