Keep your local repository clean

cleanup.sh

#!/bin/sh

# cleanup of local repository

set -e

echo "*** Listing branches already merged to develop *** \n"
git checkout develop > /dev/null 2>&1

BRANCHES=$(git branch --merged | grep -v develop | grep -v master)

echo "Branches to delete locally: \n"
echo $BRANCHES | tr ' ' '\n'

read -p "Do you wish to delete the listed branches ? [y/n] " RESP

if [ "$RESP" = "y" ]; then
  echo $BRANCHES | while read branch; do
    git branch -d $branch
done
else
  exit
fi