chfn
(1)change real user name and information
Options
7-f--full-nameFULL_NAMEChange the user's full name.
-h--home-phoneHOME_PHONEChange the user's home phone number.
-o--otherOTHERChange the user's other GECOS information. This field is used to store accounting information used by other applications, and can be changed only by a superuser.
-r--roomROOM_NUMBERChange the user's room number.
-R--rootCHROOT_DIRApply changes in the CHROOT_DIR directory and use the configuration files from the CHROOT_DIR directory. Only absolute paths are supported.
-u--helpDisplay help message and exit.
-w--work-phoneWORK_PHONEChange the user's office phone number.
DESCRIPTION
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.
CONFIGURATION
The following configuration variables in /etc/login.defs change the behavior of this tool:
CHFN_RESTRICT (string)