From CS Wiki

Change Finger Name

From your browser

First, go to http://www.cs.mtsu.edu and click on the Login Page link.

Now, log in with your username and password.

A menu with your username as the title will appear above the search box. Click the My Account link.

Select the Edit tab and select the UNIX Attributes option.

After changing your Finger Name option, click Submit.

From the Command Line

First, log in to Linux_row. Use the chfn command to change your finger name.

chfn -u "My new fingername"