print CONF "udev_root=\"$udev_root\"\n";
print CONF "udev_db=\"$udev_db\"\n";
print CONF "udev_rules=\"$conf_tmp\"\n";
-print CONF "default_mode=\"0660\"\n";
-print CONF "default_owner=\"root\"\n";
-print CONF "default_group=\"root\"\n";
close CONF;
my $test_num = 1;