LDAP-UX Client Services B.04.00 with Microsoft Windows 2000/2003 Active Directory Administrator's Guide
Modifying User Information
Changing Passwords
Chapter 5132
Changing Passwords
Users can change their password with the passwd(1) command.
Depending on how PAM is configured and depending on where the user’s
information is located (in the directory or in /etc/passwd), users may be
prompted for their password twice as PAM searches in the configured
locations for the user’s information.