Call Me Al

I need a little help renaming files. I have fileNameIn and I want to pass it through a regex to clean it to make fileNameOut. That part is easy enough.

So I have the source string and the target string, but how do I get them both in my output string? CTho suggested I use sed to duplicate the line.

But then I need to make sure I only work on the second one. I could put in a dummy item to identify it.

I've also tried doing it all inside a bash script that does its own looping.

however, that breaks a single line up at all of the spaces, so one row isn't treated as a single string.

I like CTho's idea, but my regex-fu isn't good enough.