A simple way to detect unused files in a project using git

remove-images.sh

#!/bin/sh
for FILE in $(git ls-files ./img); do
  # echo files that should be removed
  # git grep $(basename "$FILE") > /dev/null || echo "would remove $FILE"

  # remove files that should be removed
  git grep $(basename "$FILE") > /dev/null || git rm "$FILE"
done

# credit: https://tanzu.vmware.com/content/blog/a-simple-way-to-detect-unused-files-in-a-project-using-git
# Do not forget to add execution rights to the file: > chmod +x remove-images.sh
# Run the script with: > ./remove-images.sh