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+<?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_chkpwd">
+
+ <refmeta>
+ <refentrytitle>unix_chkpwd</refentrytitle>
+ <manvolnum>8</manvolnum>
+ <refmiscinfo class="sectdesc">Linux-PAM Manual</refmiscinfo>
+ </refmeta>
+
+ <refnamediv id="unix_chkpwd-name">
+ <refname>unix_chkpwd</refname>
+ <refpurpose>Helper binary that verifies the password of the current user</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <cmdsynopsis id="unix_chkpwd-cmdsynopsis">
+ <command>unix_chkpwd</command>
+ <arg choice="opt">
+ ...
+ </arg>
+ </cmdsynopsis>
+ </refsynopsisdiv>
+
+ <refsect1 id="unix_chkpwd-description">
+
+ <title>DESCRIPTION</title>
+
+ <para>
+ <emphasis>unix_chkpwd</emphasis> is a helper program for the
+ <emphasis>pam_unix</emphasis> module that verifies the
+ password of the current user. It also checks password and account
+ expiration dates in <emphasis>shadow</emphasis>. It is not intended to
+ be run directly from the command line and logs a security violation if
+ done so.
+ </para>
+
+ <para>
+ It is typically installed setuid root or setgid shadow.
+ </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_chkpwd-see_also'>
+ <title>SEE ALSO</title>
+ <para>
+ <citerefentry>
+ <refentrytitle>pam_unix</refentrytitle><manvolnum>8</manvolnum>
+ </citerefentry>
+ </para>
+ </refsect1>
+
+ <refsect1 id='unix_chkpwd-author'>
+ <title>AUTHOR</title>
+ <para>
+ Written by Andrew Morgan and other various people.
+ </para>
+ </refsect1>
+
+</refentry>