Bash one-liner to find all filetypes in a git repo

filetypes.sh

git ls-files | grep -P '\/[^\/\.]*\.[^\/\.]+$' | sed -r 's/.*\.([^\/\.]+)$/\1/g' | sort | uniq

git-filetypes

#!/usr/bin/sh
# add this file on the path so that you can run the following command:
# git filetypes
git ls-files | grep -P '\/[^\/\.]*\.[^\/\.]+$' | sed -r 's/.*\.([^\/\.]+)$/\1/g' | sort | uniq