File Naming Utility Suggestions

[iMacMaverick]

Can anyone suggest a good Macintosh utility (for OS 9 or X) that will batch process a collection of files (perhaps thousands), assess each file's type/creator code, and automatically add the correct DOS extension (e.g., .doc) to the filename? Thanks in advance!

 

[Incubated Funk]

You should be able to do such a thing in 'Automator', an application new to tiger.

I use it to batch rename hundreds of jpegs and/or mp3's in one go.