One observation is that I don't think you need the %import hash. (In fact you aren't using it later in your script) You could append the items you find in the second file to the items you have already collected in the %import hash. 

while (<IMPORT>) {
        my ( $machine, $user, undef, undef, undef, undef, $locale, und
+ef ) =
                split(/,/,$_);
        push(@{$scanned{$machine}}, $user, $locale);
}
close (IMPORT)

[download]
Hope that helps.
"Some days I feel like a Packled."

OSUnderdog

In reply to Re: reprise searching two files by osunderdog
in thread reprise searching two files by tcf03

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