unix_update is a helper program for the pam_unix module that updates
the password of a given user. It is not intended to be run directly
from the command line and logs a security violation if done so.
The purpose of the helper is to enable tighter confinement of login
and password changing services. The helper is thus called only when
SELinux is enabled on the system.
The interface of the helper - command line options, and input/output
data format are internal to the pam_unix module and it should not be
called directly from applications.
This page is part of the linux-pam (Pluggable Authentication Modules
for Linux) project. Information about the project can be found at
⟨https://fedorahosted.org/linux-pam/⟩. If you have a bug report for
this manual page, see ⟨https://fedorahosted.org/linux-pam/report⟩.
This page was obtained from the tarball Linux-PAM-1.3.0.tar.gz
fetched from ⟨http://www.linux-pam.org/library/⟩ on 2017-03-13. If
you discover any rendering problems in this HTML version 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 manual page), send a
mail to firstname.lastname@example.org
Linux-PAM Manual 04/01/2016 UNIX_UPDATE(8)