The accepted answer didn't find all of them for me. Here is an example using grep's `-I` to ignore binaries, and ignoring all hidden files...

 find . -type f -not -path '*/\.*' -exec grep -Il '.' {} \; | xargs -L 1 echo 

Here it is in use in a practical application: dos2unix

https://unix.stackexchange.com/a/365679/112190

Hope that helps.