The finger command shows you more information about a user. To use finger, type finger, the login name of the person you want to find out more information about, and press <Enter>.
$The information finger shows you depends on how it has been set up on your system. If you create a file called .plan in your home directory, the information in this file is shown when someone types finger and your login name:
finger sarahLogin name: sarah In real life: Sarah Connell Directory: /u/sarah Shell: /usr/sco/bin/ksh On since Jun 28 08:06:50 on tty001 14 minutes Idle Time No Plan
cat > .plan To finish writing the tutorial and go on a long, long vacation <Ctrl>D$
finger susannahLogin name: susannah In real life: Susannah Skyer Directory: /u/susannah Shell: /bin/sh Not logged in. Plan: To finish writing the tutorial and go on a long, long vacation