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diff --git a/modules/pam_unix/unix_update.8 b/modules/pam_unix/unix_update.8
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+++ b/modules/pam_unix/unix_update.8
@@ -0,0 +1,52 @@
+'\" t
+.\"     Title: unix_update
+.\"    Author: [see the "AUTHOR" section]
+.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
+.\"      Date: 09/03/2021
+.\"    Manual: Linux-PAM Manual
+.\"    Source: Linux-PAM Manual
+.\"  Language: English
+.\"
+.TH "UNIX_UPDATE" "8" "09/03/2021" "Linux-PAM Manual" "Linux\-PAM Manual"
+.\" -----------------------------------------------------------------
+.\" * Define some portability stuff
+.\" -----------------------------------------------------------------
+.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+.\" http://bugs.debian.org/507673
+.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html
+.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+.ie \n(.g .ds Aq \(aq
+.el       .ds Aq '
+.\" -----------------------------------------------------------------
+.\" * set default formatting
+.\" -----------------------------------------------------------------
+.\" disable hyphenation
+.nh
+.\" disable justification (adjust text to left margin only)
+.ad l
+.\" -----------------------------------------------------------------
+.\" * MAIN CONTENT STARTS HERE *
+.\" -----------------------------------------------------------------
+.SH "NAME"
+unix_update \- Helper binary that updates the password of a given user
+.SH "SYNOPSIS"
+.HP \w'\fBunix_update\fR\ 'u
+\fBunix_update\fR [\&.\&.\&.]
+.SH "DESCRIPTION"
+.PP
+\fIunix_update\fR
+is a helper program for the
+\fIpam_unix\fR
+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\&.
+.PP
+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\&.
+.PP
+The interface of the helper \- command line options, and input/output data format are internal to the
+\fIpam_unix\fR
+module and it should not be called directly from applications\&.
+.SH "SEE ALSO"
+.PP
+\fBpam_unix\fR(8)
+.SH "AUTHOR"
+.PP
+Written by Tomas Mraz and other various people\&.
diff --git a/modules/pam_unix/unix_update.8.xml b/modules/pam_unix/unix_update.8.xml
new file mode 100644
index 0000000..6c7467b
--- /dev/null
+++ b/modules/pam_unix/unix_update.8.xml
@@ -0,0 +1,67 @@
+<?xml version="1.0" encoding='UTF-8'?>
+<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.3//EN"
+	"http://www.oasis-open.org/docbook/xml/4.3/docbookx.dtd">
+
+<refentry id="unix_update">
+
+  <refmeta>
+    <refentrytitle>unix_update</refentrytitle>
+    <manvolnum>8</manvolnum>
+    <refmiscinfo class="sectdesc">Linux-PAM Manual</refmiscinfo>
+  </refmeta>
+
+  <refnamediv id="unix_update-name">
+    <refname>unix_update</refname>
+    <refpurpose>Helper binary that updates the password of a given user</refpurpose>
+  </refnamediv>
+
+  <refsynopsisdiv>
+    <cmdsynopsis id="unix_update-cmdsynopsis">
+      <command>unix_update</command>
+      <arg choice="opt">
+        ...
+      </arg>
+    </cmdsynopsis>
+  </refsynopsisdiv>
+
+  <refsect1 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 id='unix_update-see_also'>
+    <title>SEE ALSO</title>
+    <para>
+      <citerefentry>
+	<refentrytitle>pam_unix</refentrytitle><manvolnum>8</manvolnum>
+      </citerefentry>
+    </para>
+  </refsect1>
+
+  <refsect1 id='unix_update-author'>
+    <title>AUTHOR</title>
+      <para>
+        Written by Tomas Mraz and other various people.
+      </para>
+  </refsect1>
+
+</refentry>