Scroll to navigation

CHFN(1) User Commands CHFN(1)


chfn - change real user name and information


chfn [tilvalg] [LOGIND]


The chfn command changes user fullname, office room number, office phone number, and home phone number information for a user's account. This information is typically printed by finger(1) and similar programs. A normal user may only change the fields for her own account, subject to the restrictions in /etc/login.defs. (The default configuration is to prevent users from changing their fullname.) The superuser may change any field for any account. Additionally, only the superuser may use the -o option to change the undefined portions of the GECOS field.

These fields must not contain any colons. Except for the other field, they should not contain any comma or equal sign. It is also recommended to avoid non-US-ASCII characters, but this is only enforced for the phone numbers. The other field is used to store accounting information used by other applications.


The options which apply to the chfn command are:

-f, --full-name FULL_NAME

Ændr brugerens navn.

-h, --home-phone HOME_PHONE

Ændr brugerens telefonnummer.

-o, --other OTHER

Ændr brugerens anden GECOS-information. Dette felt bruges til at gemme kontoinformation brugt af andre programmer, og kan kun ændres af en superbruger.

-r, --room ROOM_NUMBER

Ændr brugerens værelsesnummer.

-R, --root CHROOT_DIR

Apply changes in the CHROOT_DIR directory and use the configuration files from the CHROOT_DIR directory.

-u, --help

Vis hjælpeteksten og afslut.

-w, --work-phone WORK_PHONE

Ændr brugerens arbejdsnummer.

If none of the options are selected, chfn operates in an interactive fashion, prompting the user with the current values for all of the fields. Enter the new value to change the field, or leave the line blank to use the current value. The current value is displayed between a pair of [ ] marks. Without options, chfn prompts for the current user account.


The following configuration variables in /etc/login.defs change the behavior of this tool:



Shadow password suite configuration.


Information om brugerkonto.


chsh(1), login.defs(5), passwd(5).

03/03/2022 shadow-utils 4.11.1