What you've got works, but if you're concerned about space overhead, you could do something like 
foreach my $file ( readdir(DIR) ) {
    push @dirs, $file if -d "$base/$file"
                         and $file ne "."
                         and $file ne "..";
    push @files, $file if -f "$base/$file";
}

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In reply to Re: Producing 2 lists from a grep call by dws
in thread Producing 2 lists from a grep call by BrowserUk

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