I have 1000s of duplicate photos in many different directories on many different hard disks. My home server has my primary copy of pictures. I want to consolidate and make sure I'm not missing any pictures; is there a utility out there I can use where I give i two directories - a source and destination, and it will show files in the source which are not present in any subdirectories in the destination?
I run Linux, Windows and OS X but my preference is a graphical tool for Windows or Mac.