char message[] = "\
You have not registered with Kerberos, the authentication server.\n\
I will run the registration program, which will prompt you for your old\n\
and a new password.  Enter your current password as the 'old' password.\n\
You may type the same password as the 'new' password, or you may change\n\
your password.";
 
main(argc,argv)
int argc;
char **argv;
{
    puts(message);
    execl("/krb/passwd", "passwd", argv[1], 0);
    perror("Couldn't run password program");
    sleep(3);
}