Prune local GIT branches no longer tracked by remote

git-prune-branches

#!/usr/bin/bash

# Removes local branches that are no longer tracked on remote

set -e

branches=($(git branch -vv | grep ": gone" | grep -v "^+" | sed -r 's/^ *([^ ]+).*$/\1/'))

if (( ${#branches[@]} == 0 )); then
  echo "Nothing to prune"
elif [[ "${1}" == "--force" ]]; then
  echo "Deleting branches:"
  for branch in "${branches[@]}"; do
    echo " - ${branch}"
    git branch -D "${branch}"
  done
else
  echo "Branches to delete (use --force):"
  for branch in "${branches[@]}"; do
    echo " - ${branch}"
  done
fi