Gecos Field - Format

Format

The typical format for the GECOS field is a comma-delimited list with this order:

1. User's full name (or application name, if the account is for a program)
2. Building and room number or contact person
3. Office telephone number
4. Any other contact information (pager number, fax, etc.)

In most of the UNIX systems this information can be changed by normal users using the chfn command from the shell.