I'm currently facing the task of renaming pretty much my company's entire set of Solidworks files from "partnum-rev-description" to simply "partnum". Is there any way of doing this other than manually one file at a time? Basically I want to keep the first 10 characters and throw away everything after those. It's easy enough to prepend or append characters to a large number of files at once, but I haven't figured out a way to remove characters.

I know I'm going to have to do some work up front to make sure I'm not trying to rename 2 or more files to the same shortened name. I can work that out, I just can't figure out how to do the rename other than 1 file at a time.