In the past month I’ve done a lot of traveling. Traveling means noodling - lots of topic branches laying around from airplane rides and hotel hacking. Today I decided to get rid of the topic branches which had been merged into master. But how?
When in doubt, ask Scott Chacon. Here’s how to delete all the branches which are a subset of master (and therefor contain nothing juicy):
git branch --contains master | grep -v master | xargs git branch -d