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- '\" t
- .\" Title: unix_chkpwd
- .\" 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_CHKPWD" "8" "09/03/2021" "Linux-PAM Manual" "Linux\-PAM Manual"
- .\" -----------------------------------------------------------------
- .\" * Define some portability stuff
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- .\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- .\" http://bugs.debian.org/507673
- .\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html
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- .nh
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- .\" * MAIN CONTENT STARTS HERE *
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- .SH "NAME"
- unix_chkpwd \- Helper binary that verifies the password of the current user
- .SH "SYNOPSIS"
- .HP \w'\fBunix_chkpwd\fR\ 'u
- \fBunix_chkpwd\fR [\&.\&.\&.]
- .SH "DESCRIPTION"
- .PP
- \fIunix_chkpwd\fR
- is a helper program for the
- \fIpam_unix\fR
- module that verifies the password of the current user\&. It also checks password and account expiration dates in
- \fIshadow\fR\&. It is not intended to be run directly from the command line and logs a security violation if done so\&.
- .PP
- It is typically installed setuid root or setgid shadow\&.
- .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 Andrew Morgan and other various people\&.
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