Tidy up local and remote branches in git

Your remote tracking branches

This cleans up the big origin list you get when you do git branch --remote

git remote prune origin

Local branches that have been merged

This removes your local branches that have been merged into the current branch.

git branch --merged | grep -v \* | xargs git branch -D

Branches on the remote

Remove branches that have been merged on the remote (skipping master)

git branch -r --merged | grep -v master | sed 's/origin\///' | xargs -n 1 git push --delete origin

Or if you use main:

git branch -r --merged | grep -v main | sed 's/origin\///' | xargs -n 1 git push --delete origin

Adding a git alias to do all this for you

Note: this assumes you're currently on master.

git config --global alias.cleanup-merged '!f() { git remote prune origin; git branch --merged | grep -v \* | xargs -I {} git branch -D {}; git branch -r --merged | grep -v master | sed "s/origin\///" | xargs -n 1 git push --delete origin; }; f'