Gecos field
From Wikipedia, the free encyclopedia
The gecos field, or GECOS field is an entry in the /etc/passwd file on Unix, and similar operating systems.
It is typically used to record general information about the account or its user(s) such as their real name and phone number.
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Format [edit]
The typical format for the GECOS field is a comma-delimited list[1][2] with this order:
- 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 of the UNIX systems this information can be changed by normal users using the chfn command from the shell.
History [edit]
Some early Unix systems at Bell Labs used GECOS machines for print spooling and various other services,[3] so this field was added to carry information on a user's GECOS identity.
