Finger shows when other users last read their email.

finger can also tell you when the person last read his or her email. For example, if you run finger on a single user, you’ll get some extra information about him, including whether he’s been reading his mail:

On an overloaded system, check before running an intensive job

At one time (don’t laugh), we had a UNIX system that couldn’t handle more than two users running troff at the same time. So before we could run a troff command, we had to check on how many troff commands were already running with the following command:

% ps uax | grep troff
% finger frank
Login name: frank In real life: Frank Willison
Directory: /ruby/home/frank Shell: /bin/csh
On since Oct 17 08:09:28 on ttyp9 from ncd1.ora.com:0.0
3 hours 22 minutes Idle Time
Mail last read Thu Oct 20 16:19:04 1994
No Plan.

Login name: frank In real life: Frank Willison
Directory: /ruby/home/frank Shell: /bin/csh
On since Oct 17 08:09:28 on ttypa from ncd1.ora.com:0.0
2 days 1 hour Idle Time

Frank’s read his email in the past hour (which means he has no excuse not to have responded to my last message).

Your finger output may vary. For example, on another machine, finger’s output looks more like this:

% finger frank
-User    --Full name-  -WhatIdle TTY -Console Location-
frank      Frank Willison  csh    3:23 p9  ncd1 (X display 0)
                           csh    2d1h pa  ncd1 (X display 0)
  [387,100]  </ruby/home/frank>;  Group: ora
  Groups: production

  frank has no new mail, last read Thu 20-Oct-94 4:19PM
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