1 <?xml version="1.0" encoding='UTF-8'?>
2 <!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.3//EN"
3 "http://www.oasis-open.org/docbook/xml/4.3/docbookx.dtd">
5 <refentry id="unix_chkpwd">
8 <refentrytitle>unix_chkpwd</refentrytitle>
9 <manvolnum>8</manvolnum>
10 <refmiscinfo class="sectdesc">Linux-PAM Manual</refmiscinfo>
13 <refnamediv id="unix_chkpwd-name">
14 <refname>unix_chkpwd</refname>
15 <refpurpose>Helper binary that verifies the password of the current user</refpurpose>
19 <cmdsynopsis id="unix_chkpwd-cmdsynopsis">
20 <command>unix_chkpwd</command>
27 <refsect1 id="unix_chkpwd-description">
29 <title>DESCRIPTION</title>
32 <emphasis>unix_chkpwd</emphasis> is a helper program for the
33 <emphasis>pam_unix</emphasis> module that verifies the
34 password of the current user. It also checks password and account
35 expiration dates in <emphasis>shadow</emphasis>. It is not intended to
36 be run directly from the command line and logs a security violation if
41 It is typically installed setuid root or setgid shadow.
45 The interface of the helper - command line options, and input/output
46 data format are internal to the <emphasis>pam_unix</emphasis>
47 module and it should not be called directly from applications.
51 <refsect1 id='unix_chkpwd-see_also'>
52 <title>SEE ALSO</title>
55 <refentrytitle>pam_unix</refentrytitle><manvolnum>8</manvolnum>
60 <refsect1 id='unix_chkpwd-author'>
63 Written by Andrew Morgan and other various people.