Clean unneeded branches from a git remote

git_clean_remote.sh

#!/usr/bin/env bash

git_clean_remote()
{
  remote=$1
  [[ -z "$remote" ]] && echo "Must provide a remote" && return 1

  for branch in $(git branch -r | grep $remote | grep -v master)
  do
    diff=$(git cherry -v master $branch | wc -l)
    short_branch=$(echo $branch | cut -d'/' -f2)
    if [ "$diff" -eq 0 ]; then
      git push $remote :$short_branch > /dev/null 2>&1
      git branch -d $short_branch > /dev/null 2>&1
      echo "Deleted branch $branch"
    else
      echo "Can't delete $branch"
    fi
  done
}