... ... 2.2.1 Using chfn to change your full name (and more)

On many Unix systems you can change some of your default information,
such as your full name, by typing the following at your Unix prompt:

   chfn

If chfn is not available try "passwd -f".  If neither of these are
available then you will need to contact your system administrator and
ask him/her to change your full name, etc.

After you have changed your information check that they are in place
by fingering yourself.  Also to see a different display of your
information type the following at your Unix prompt:

   finger

This displays a one line description of everyone currently logged on
your system.

For more information see the chfn(1), passwd(1), and finger(1) man pages.