Hello everyone!

Today I'm going on to tell to you the easiest way how to remove local and remote branches in GIT. 

1. Remove all local branches except current:
   git branch | xargs git branch -D
2. Remove all local branches except specified:
   git branch | grep -v "master" | grep -v "develop" | xargs git branch -D
3. Remove all remote branches except protected (not tested):
   export REMOTE_NAME="origin" && git branch -r | xargs -I{} | cut -c$(echo -n $REMOTE_NAME// | wc -m)-100 | xargs git push $REMOTE_NAME --delete
4. Remove all remote branches except specified:
   export REMOTE_NAME="origin" && git branch -r | grep -v "master" | grep -v "develop" | xargs -I{} | cut -c$(echo -n $REMOTE_NAME// | wc -m)-100 | xargs git push $REMOTE_NAME --delete

Hope this article will help you and save your day!

Enjoy!