git-rm-merged-branches

#!/bin/bash
set -e
current=`git symbolic-ref --quiet --short HEAD`
exclude="^(master|develop)"


git fetch origin
git checkout master
git reset --hard origin/master
git branch --merged origin/master \
  | cut -c3-                      \
  | grep -v "$exclude"            \
  | xargs git branch --delete

git checkout "$current"