git branch -r --merged origin/master
git branch --merged master | grep -v "\* master" | xargs -n 1 git branch -d
git branch -r --merged origin/master | grep -v "\* master" | xargs -n 1 git push origin --delete
git branch -r --merged origin/master
git branch --merged master | grep -v "\* master" | xargs -n 1 git branch -d
git branch -r --merged origin/master | grep -v "\* master" | xargs -n 1 git push origin --delete