gistfile1.txt

Delete remote merged into master
git branch -r --merged | awk -F'/' '/^ *origin/{if(!match($0, /(>|master)/)){print $2}}' | xargs git push origin --delete

Delete local merged into current branch
git branch --merged | grep -v "\*" | xargs -n 1 git branch -d



Delete all remote not in egrep
git branch -a | egrep "remotes/origin/" | cut -d "/" -f 3- | egrep -v "(master|develop)" | xargs -n 1 git push --delete origin

Delete all local not in egrep
git branch | egrep -v "(master|develop)" | xargs git branch -D