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It is typically used to record general information about the account or its user(s) such as their real name and phone number.
- User's full name (or application name, if the account is for a program)
- Building and room number or contact person
- Office telephone number
- Any other contact information (pager number, fax, etc.)
In most UNIX systems normal users can change their own information using the chfn or chsh command.