To list the users currently logged in to your system, use the who command. The login, terminal name, and login date and time are displayed:
$To find out more about an individual user, use the finger command. For example:
whojosephh tty001 Mar 25 14:29 susant tty002 Mar 25 14:29 peterp tty003 Mar 25 14:29 perry tty005 Mar 25 14:31
$finger can be used on a user who is not logged in. If you do not specify a login, finger displays information about all the users currently logged in.
finger perryLogin name: perry In real life: Perry Patetic Directory: /u/perry Shell: /bin/ksh On since Mar 9 09:23:40 on tty005 No Plan. $
Note that in the example above, the bottom line states
Plan. This indicates that the user does not have a file
called .plan in their home directory. If such a file
exists, its contents are printed by finger.
The .plan file is a
useful place to put information that you want to have publicly
available, such as your telephone number and current work
project. Use any text editor to create a .plan file.
See also the who(C) and finger(C) manual pages.