I did not see it. There are file attributes in win32 land that you could compare, and stat still does filesize, etc. Finally, I'd probably used Digest::MD5 if I were to rewrite this (which would work in win32). So, while you might not be able to simply download and use this (well, you probably could under cygwin -- which you should have if you enevy those with access to *nix) it was mostly intended to show that there's more to directories than filenames.