How to delete all remote git branches which have already been integrated?

Question

At work we are using topic branches which are integrated into a few (3) master branches at some point. Now I\'d like to delete all topic branches from my remote reposit

Answer 1

These are the commands I'm using to remove everything merge into origin/master. Basically, I remove all the branches merged into master from GitHub.

git remote update -p &&
git branch -r --merged origin/master |
grep origin |
grep -v master |
cut -d"/" -f2- |
xargs git push origin --delete