FINDSTR to search string in files in a specified set of extensions

Question

I want to search for a string in files which end with .asp, .config, and .txt. In other words I want to query asp, web.config, or text files for that particular string.

I found that the /G switch doesn't do the trick.

Answer 1

Have you tried

findstr foo *.asp *.config *.txt

or

findstr /S foo *.asp *.config *.txt