Pelushe

Back when I first started using Linux nearly all Linux systems were truly multi-user systems. Because of this the finger command was an important tool to keep handy. What finger does is report information on a user. So if you wanted to know the phone number, office number, if the user had mail, etc you would just issue the command:
finger USERNAME
Where USERNAME is the real user name of the user.
When issued this command would report all of the information the user had set. In most educational institutions you could find out where your instructors office was or what that instructors office hours where – just about any information that user decided to share.
The finger command is still useful. Even on a single-user system (which seems strange to me that a Linux system would only have one user) finger can offer the user login information, shell information, home directory, etc.
When you [...]