how to delete branches on local and remote github code example
Example 1: git branch delete local and remote
// delete branch locally
git branch -d localBranchName
// delete branch remotely
git push origin --delete remoteBranchName
Example 2: How to Delete Local/Remote Git Branches
$ git branch -r | egrep -v -f /dev/fd/0 <(git branch -vv | grep origin) | xargs git branch -d