git: Delete All Branches but Master
Maintenance is incredibly important in any project, but if you want to take your professionalism to the next level, you should keep your git environment in shape.  Unfortunately I'm not that guy -- I leave git branches laying around, even after they've been merged into master.  GitHub even provides a button to do the cleanup but I can't be bothered.  Not good.
When you're ready to do some real cleanup on a repository, throw this at it:
git branch | grep -v "master" | sed 's/^[ *]*//' | sed 's/^/git branch -d /' | bash
The shell command above deletes every branch in your local checkout except for master branch.  This is a dangerous script but you could always check out a given branch from a remote like GitHub if you happen to need it!
![From Webcam to Animated GIF: the Secret Behind chat.meatspac.es!]()
My team mate Edna Piranha is not only an awesome hacker; she's also a fantastic philosopher! Communication and online interactions is a subject that has kept her mind busy for a long time, and it has also resulted in a bunch of interesting experimental projects...
![An Interview with Eric Meyer]()
Your early CSS books were instrumental in pushing my love for front end technologies.  What was it about CSS that you fell in love with and drove you to write about it?
At first blush, it was the simplicity of it as compared to the table-and-spacer...
![Truly Responsive Images with responsive-images.js]()
Responsive web design is something you hear a lot about these days. The moment I really started to get into responsive design was a few months ago when I started to realise that 'responsive' is not just about scaling your websites to the size of your...
![Introducing MooTools LinkAlert]()
One of my favorite Firefox plugins is called LinkAlert.  LinkAlert shows the user an icon when they hover over a special link, like a link to a Microsoft Word DOC or a PDF file.  I love that warning because I hate the surprise...
The script becomes less dangerous, when it uses the
variant instead of the upper case
-D. Then branches are only deleted, when they are already merged in any of the remaining branches, and no work is lost. (Also, the error messages show you, which branches have work, that has not yet landed in master.)Updated my post! Thank you!
git remote prune origin -)
Thank you, this worked well for me. I first tried it with
-d, which deleted some, and then decided to go for-D, which did end up deleting everything butmaster.