[sudo-users] Problem with 'sudo' ignoring switches

[Todd C. Miller]

Personally, I would do it like this:

system("sudo -K");

...

$pid = open(SUDO, "|-");
if (!defined($pid)) {
        die "$0: can't fork: $!\n";
} elsif ($pid) {
        print SUDO "$passwd\n";
        close(SUDO);
} else {
        exec("sudo", "-S", "-v", "-p", $say_sudo);
}                                                                               

That way $say_sudo can contain whitespace without worrying about
quoting issues.

 - todd