except that lamentably, file creation (and deletion) is not atomic
over NFS, so this won't work (at least, not every time) over the net.
-Various schemes involving involving link() have been suggested, but
-these tend to involve busy-wait, which is also subdesirable.
+Various schemes involving link() have been suggested, but these tend
+to involve busy-wait, which is also subdesirable.
=head2 I still don't get locking. I just want to increment the number
in the file. How can I do this?