git log HEAD~10..HEAD
git for-each-ref --count=50 --sort=-committerdate refs/heads/ --format="%(refname:short) [%(color:green)%(committerdate:relative)%(color:reset)]"
git log --merges --pretty=%s
git fetch -p && for branch in `git branch -vv | grep ': gone]' | awk '{print $1}'`; do git branch -D $branch; done
- works in bash