RH yppasswd issue

[Jun Zhang_4]

After creating a nis user and updated the map, I used a script where perl module Authen-PAM is invoked to change the password. The script run smoothly, but password is not updated for the user.
The update is successful when using yppasswd manually. Here, root password was asked first, and then twice for new password.
Monitoring the script line by line, I noticed that only two times for new password are prompted, root password is not asked.
In
$res = $pamh->pam_chauthtok;
the value of $res is 0, means successful authentication.

Jun

[Jun Zhang_4]

The fault is at Redhat yppasswd. I moved the same script to run on an hpux machine, password updated.
The behavior of using yppasswd at the command line and through Authen-PAM script is the same, which make me feel much better.
I wish good luck to the author of Authen-PAM in writing his thesis.

Jun