#!/usr/bin/env bash

git checkout master
git pull

DELETED="0"
git branch --merged master | grep -v master | while read BRANCH; do
    git branch -d $BRANCH
    (( DELETED = DELETED + 1 ))
done

if [[ "$DELETED" -eq "0" ]]; then
    echo "No branches to clean up."
fi

echo "Branches remaining:"
git branch