grep, but only certain file extensions

Question

I am working on writing some scripts to grep certain directories, but these directories contain all sorts of file types.

I want to grep jus

Answer 1

If you want to filter out extensions from the output of another command e.g. "git":

files=$(git diff --name-only --diff-filter=d origin/master... | grep -E '\.cpp$|\.h$')

for file in $files; do
    echo "$file"
done