Remove unused local branches

git-unused

#!/usr/bin/env bash

usage()
{
  echo "usage: git unused [-D]"
}

while getopts "hD" opt; do
  case $opt in
    h)
      usage
      exit 1
      ;;
    D)
      DELETE="1"
      ;;
    \?)
      usage
      exit 1
      ;;
  esac
done

git branch -vv | grep 'origin/.*: gone]' | awk '{print $1}' | while read branch; do
    if [ ! -z "$DELETE" ]; then
        git branch -D $branch
    else
        echo Would remove $branch
    fi
done