remove-unused-images

# from: http://blog.pivotal.io/labs/labs/a-simple-way-to-detect-unused-files-in-a-project-using-git
# `git ls-files` -> get a list of files from a directory
# `git grep` + loop -> check for reference to file in repo
# list or remove the file

# dry run: just list the unused files
for FILE in $(git ls-files ./img); do
    git grep $(basename "$FILE") > /dev/null || echo "would remove $FILE"
done

# for real: git rm the file
for FILE in $(git ls-files ./img); do
    git grep $(basename "$FILE") > /dev/null || git rm "$FILE"
done