Using “find” command on a shell is the hard (and better!) way, but sometimes you can’t. I’ve got to find an exact kind of file extension into my Time Machine backup.
I wanted all my .AI files. So, I’ve tried to find “.ai” as document name in the search bar of the finder. Sometime it could be enough, when the extention has no variants. But in this case I’ve got the problem that Osx is plenty of .AIF audio file and those are most of the results of my search.
As I said, it has been easy: “.ai” -aif
That’s all, hope this can help others.