# Sanitize $path to prevent shell injection attacks.
    $path =~ /^\/[\/[A-Za-z0-9_\-\.=]+$/ or die "Filename contains illegal characters.\n";
    # FIXME: don't use shell invocations below.

        $res = `cd $path && find . -print0 | xargs -0 ls -ld --`;

        $res = `cd '$path' && find . -print0 | xargs -0 ls -ld --`;

        $res = `rpm --query --info --package "$path"`;

        $res = `rpm --query --info --package '$path'`;

        $res .= `rpm --query --list --verbose --package "$path"`;

        $res .= `rpm --query --list --verbose --package '$path'`;

        $res = `dpkg-deb --info "$path"`;

        $res = `dpkg-deb --info '$path'`;

        $res .= `dpkg-deb --contents "$path"`;

        $res .= `dpkg-deb --contents '$path'`;

        $res = `tar tvfa "$path"`;

        $res = `tar tvfa '$path'`;

        $res = `unzip -v "$path"`;

        $res = `unzip -v '$path'`;

        $res = `isoinfo -d -i "$path" && isoinfo -l -R -i "$path"`;

        $res = `isoinfo -d -i '$path' && isoinfo -l -R -i '$path'`;