Provided by: libpam-unix2_2.6-2_amd64 
NAME
unix2_chkpwd - helper binary that verifies the password of the current user
SYNOPSIS
/sbin/unix2_chkpwd servicename username
DESCRIPTION
unix2_chkpwd is a helper program for applications that verifies the password of the current user. It is
not intended to be run directly from the command line and logs a security violation if done so.
It is typically installed setuid root or setgid shadow and called by applications, which only wishes to
do an user authentication and nothing more.
OPTIONS
unix2_pwdchk requires the following arguments:
pam_service
The name of the service using unix2_chkpwd. This is required to be one of the services in
/etc/pam.d
username
The name of the user whose password you want to verify.
INPUTS
unix2_pwdchk expects the password via stdin.
RETURN CODES
unix2_chkpwd has the following return codes:
1 unix2_chkpwd was inappropriately called from the command line or the password is incorrect.
0 The password is correct.
HISTORY
Written by Olaf Kirch loosely based on unix_chkpwd by Andrew Morgan
SEE ALSO
pam(8)
AUTHOR
Emily Ratliff.