unix_chkpwd man page on Peanut

unix_chkpwd man page on Peanut

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UNIX_CHKPWD(8)		       Linux-PAM Manual			UNIX_CHKPWD(8)

NAME
       unix_chkpwd  -  helper binary that verifies the password of the current
       user

SYNOPSIS
       /sbin/unix_chkpwd [username]

DESCRIPTION
       unix_chkpwd is a helper program for the pam_unix module	that  verifies
       the password of the current user.  It is not intended to be run direct‐
       ly from the command line and logs a security violation if done so.

       It is typically installed setuid root or setgid shadow.

OPTIONS
       unix_pwdchk optionally takes the following argument:

       username
	      The username of the user whose password you want to check:  this
	      must match the current user id.

INPUTS
       unix_pwdchk expects the following inputs via stdin:

       option Either  nullok or nonull, depending on whether the user can have
	      an empty password.

       password
	      The password to verify.

RETURN CODES
       unix_chkpwd has the following return codes:

       1      unix_chkpwd was inappropriately called from the command line  or
	      the password is incorrect.

       0      The password is correct.

HISTORY
       Written by Andrew Morgan

SEE ALSO
       pam(8)

AUTHOR
       Emily Ratliff.

Linux-PAM 0.76			  2003-03-21			UNIX_CHKPWD(8)

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