removeMerged.sh

git checkout develop
git fetch
git remote prune origin
 
#Remove locally 
git branch --merged develop | grep -v 'develop$' | xargs git branch -d
 
echo "Branches merged, to delete:"
git branch -r --merged develop | sed 's/ *origin\///' | grep -v 'develop$'
 
read -p "Sure about that (y/n)? "
if [ "$REPLY" == "y" ]
then
   #Remove remotely 
   git branch -r --merged develop | sed 's/ *origin\///' \
             | grep -v 'develop$' | xargs -I% git push origin :%
   echo "Done!"
fi