Here’s a Mac OS X tip I came across the other day that you may find useful. On your Tiger Install DVD is a Developer Tools package, including a little utility called FileMerge. It’s normally used to compare two text files. You’d just drag two text files into the drop zones and it would show you the differences between them. That’s handy if you’re a developer working with XHTML, CSS, PHP or other text-based files.
The hidden tidbit is this: it can also compare contents of folders. Just drag one folder into each of the drop zones (left and right), and click on Compare. FileMerge will open up a new window showing a list of filenames. The grey ones are in both folders. The black ones are only in one folder – click on each of them and check the status message at the bottom of the window.