find . -type f -iname '*SEARCH*'
find ./ -type f -exec grep -H 'SEARCH' {} \;
# https://stackoverflow.com/q/16956810/1543389
grep -iwrno -e "SEARCH" --include='*.FILEEXTENSION' ./
-i --ignore-case
-w --word-regexp
-r --recursive
-n --line-number
-o --only-matching
-e pattern --regexp=pattern
--include
grep -iwrl -e "SEARCH" --include='*.FILEEXTENSION' ./
-l --files-with-matches