help with matching


I'm working on a simple script to get a list of users who do not exist

while (<>) {
$user = system("echo $_");
$result = system("dsquery user -samID $_");
}
if (!$result) {
print "$user\n";
}

Here is my problem,

dsquery user -samID should return nothing if a user does not exist. I
was hoping the script would print $user only if there was no $result
from dsquery user -samID. However, not only does it print every $user
regardless of the was not $result, it also prints every $result.

Can someone tell me why this is?

Thanks,

Rob
.

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