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    > Software error:
    > Insecure dependency in open while running setgid

    if ($data =~ /^([-\@\w.]+)$/) {
        $data = $1;                     # $data now untainted
    } else {
        die "Bad data in $data";        # log this somewhere
    }

    > #By the way when I tried to use 
    > #$nameoffile=$query->param('nameoffile'); it returned the
    > #error "..param must be part of some structure..."

    param('nameoffile')