<refentry xmlns="http://docbook.org/ns/docbook" version="5.0" xml:id="unix_update">

  <refmeta>
    <refentrytitle>unix_update</refentrytitle>
    <manvolnum>8</manvolnum>
    <refmiscinfo class="source">Linux-PAM</refmiscinfo>
    <refmiscinfo class="manual">Linux-PAM Manual</refmiscinfo>
  </refmeta>

  <refnamediv xml:id="unix_update-name">
    <refname>unix_update</refname>
    <refpurpose>Helper binary that updates the password of a given user</refpurpose>
  </refnamediv>

  <refsynopsisdiv>
    <cmdsynopsis xml:id="unix_update-cmdsynopsis" sepchar=" ">
      <command>unix_update</command>
      <arg choice="opt" rep="norepeat">
        ...
      </arg>
    </cmdsynopsis>
  </refsynopsisdiv>

  <refsect1 xml:id="unix_update-description">

    <title>DESCRIPTION</title>

    <para>
      <emphasis>unix_update</emphasis> is a helper program for the
      <emphasis>pam_unix</emphasis> 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.
    </para>

    <para>
      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.
    </para>

    <para>
      The interface of the helper - command line options, and input/output
      data format are internal to the <emphasis>pam_unix</emphasis>
      module and it should not be called directly from applications.
    </para>
  </refsect1>

  <refsect1 xml:id="unix_update-see_also">
    <title>SEE ALSO</title>
    <para>
      <citerefentry>
	<refentrytitle>pam_unix</refentrytitle><manvolnum>8</manvolnum>
      </citerefentry>
    </para>
  </refsect1>

  <refsect1 xml:id="unix_update-author">
    <title>AUTHOR</title>
      <para>
        Written by Tomas Mraz and other various people.
      </para>
  </refsect1>

</refentry>