appologies for the lack of clarity.
I am working on tidying up disk space based on age of files using the -M switch. If the file is over -M days the file is deleted. The program I have which works sucesfully traverses a tree and deletes the files that meet the test condition. Naturaly this then leaves me with a set of dirs which may or may not be empty. Therefore the net thing to do is find and delete any empty directories. At this stage I dont care about their age.
Hope this is clearer