how to permanently delete a branch in git code example

Example 1: 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

Example 2: How to Delete Local/Remote Git Branches

$ git branch -a

# *master
# b1
# remote/origin/master
# remote/origin/b1

$ git push origin --delete b1
# [...]
# - [deleted] b1