My first Ruby script: finding duplicate photo files

I've started on the large task of organizing my digital photo files. My disorganization stems from a couple of things. First, when I began using a digital camera, I used iPhoto. I don't really use it now. But I've noticed that iPhoto makes some duplicate files. Second, I think I have duplicate files from backups and from migrating from old machines to new ones. Compounded with the fact that most of the files begin with DSCN or DCP, it is a mess. So, to help me get started, I thought I would write a script that would create a report of any duplicate files and their locations. Also, since I'm about one third of the way through the Everyday Scripting with Ruby by Brian Marick, I know just enough to be dangerous. After a couple of evenings of blundering my way through this, I finally have my first Ruby script.



To call this script, you can pass in a list of directories, or it will default to the current directory.