Changing password for user.
(current) UNIX password:
New password:
Retype new password:

user@host:/tmp/pam-1.1.8$ grep '(current) UNIX password:' -B2 -A3 modules/pam_unix/pam_unix_passwd.c
                        retval = _unix_read_password(pamh, lctrl
                                                     ,Announce
                                             ,_("(current) UNIX password: ")
                                                     ,NULL
                                                     ,_UNIX_OLD_AUTHTOK
                                             ,&pass_old);
user@host:/tmp/pam-1.1.8$ _