Hello Walter, Thank you for your reply. On Jun 16, 2011, at 7:34 PM, Walter Ian Kaye wrote: > > Unix tool to check the size of a file's resource fork: > >> ls -l filename/..namedfork/rsrc I tried this on an alias file, and it worked. But I have to say that this is not convenient at all. To be sure that a file is really an empty file, we must always verify with this formula... Well, Mac file system on Unix is something not convenient at all. On the other hand, I discovered that with File Buddy, it is easy to list up all the *really* empty files in a drive. Thank you anyway. Best regard, Nobumi Iyanaga Tokyo, Japan