How can I delete all Git branches which have been merged?

Question

I have many Git branches. How do I delete branches which have already been merged? Is there an easy way to delete them all instead of deleting them one by one?

Answer 1

UPDATE:

You can add other branches to exclude like master and dev if your workflow has those as a possible ancestor. Usually I branch off of a "sprint-start" tag and master, dev and qa are not ancestors.

First, list locally-tracking branches that were merged in remote (you may consider to use -r flag to list all remote-tracking branches as suggested in other answers).

git branch --merged 

You might see few branches you don't want to remove. we can add few arguments to skip important branches that we don't want to delete like master or a develop. The following command will skip master branch and anything that has dev in it.

git branch --merged| egrep -v "(^\*|master|main|dev)" 

If you want to skip, you can add it to the egrep command like the following. The branch skip_branch_name will not be deleted.

git branch --merged| egrep -v "(^\*|master|main|dev|skip_branch_name)" 

To delete all local branches that are already merged into the currently checked out branch:

git branch --merged | egrep -v "(^\*|master|main|dev)" | xargs git branch -d 

You can see that master and dev are excluded in case they are an ancestor.

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You can delete a merged local branch with:

git branch -d branchname 

If it's not merged, use:

git branch -D branchname 

To delete it from the remote use:

git push --delete origin branchname  git push origin :branchname    # for really old git 

Once you delete the branch from the remote, you can prune to get rid of remote tracking branches with:

git remote prune origin 

or prune individual remote tracking branches, as the other answer suggests, with:

git branch -dr branchname