chfn is used to change your finger information. This information is
stored in the /etc/passwd file, and is displayed by the finger
program. The Linux finger command will display four pieces of
information that can be changed by chfn: your real name, your work
room and phone, and your home phone.
Any of the four pieces of information can be specified on the command
line. If no information is given on the command line, chfn enters
In interactive mode, chfn will prompt for each field. At a prompt,
you can enter the new information, or just press return to leave the
field unchanged. Enter the keyword "none" to make the field blank.
chfn supports non-local entries (kerberos, LDAP, etc.) if linked with
libuser, otherwise use ypchfn, lchfn or any other implementation for
-f, --full-name full-name
Specify your real name.
-o, --office office
Specify your office room number.
-p, --office-phone office-phone
Specify your office phone number.
-h, --home-phone home-phone
Specify your home phone number.
Display help text and exit.
Display version information and exit.
chfn reads the /etc/login.defs(5) configuration file. Note that the
configuration file could be distributed with another package (e.g.
shadow-utils). The following configuration items are relevant for
Indicate which fields are changeable by chfn.
The boolean setting "yes" means that only the Office, Office
Phone and Home Phone fields are changeable, and boolean setting
"no" means that also the Full Name is changeable.
Another way to specify changeable fields is by abbreviations: f =
Full Name, r = Office (room), w = Office (work) Phone, h = Home
Phone. For example, CHFN_RESTRICT "wh" allows changing work and
home phone numbers.
If CHFN_RESTRICT is undefined, then all finger information is
read-only. This is the default.
This page is part of the util-linux (a random collection of Linux
utilities) project. Information about the project can be found at
⟨https://www.kernel.org/pub/linux/utils/util-linux/⟩. If you have a
bug report for this manual page, send it to
email@example.com. This page was obtained from the
project's upstream Git repository
2017-03-13. If you discover any rendering problems in this HTML ver‐
sion of the page, or you believe there is a better or more up-to-date
source for the page, or you have corrections or improvements to the
information in this COLOPHON (which is not part of the original man‐
ual page), send a mail to firstname.lastname@example.org
util-linux November 2015 CHFN(1)