exit $?;
}
-rename($dest_dir, $old_dir) or die "Unable to rename $new_dir to $old_dir: $!";
+rename($dest_dir, $old_dir) or die "Unable to rename $dest_dir to $old_dir: $!";
rename($new_dir, $dest_dir) or die "Unable to rename $new_dir to $dest_dir: $!";
exit;