Delete git branches whose name matches a certain pattern

Update: The -r option to xargs is a GNU addon. Unless you use xargs from GNU findutils it might not work. You can omit it but that leads to an error if the input piped to xargs is empty.

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You can use git branch --list <pattern> and pipe it's output to xargs git branch -d:

git branch --list 'o*' | xargs -r git branch -d

Btw, there is a minor issue with the code above. If you've currently checked out one of the branches that begins with o the output of git branch --list 'o*' would look like this:

* origin_master
origin_test
o_what_a_branch

Note the asterisk * in front of the current branch name.

While you cannot delete the current branch anyway, it leads to the fact that xargs also passes * to git branch delete.

As I say it is just a cosmetic error, but if you want to avoid it use:

git branch --list 'o*' | sed 's/^* //' | xargs -r git branch -d

Another way could be this:

git branch -d $(git branch | grep yourSearchPattern)

to me looks more intuitive because grep is something I use daily.

You could also make an alias of it (or also of any solution suggested here), check for example here how to pass arguments to an alias: http://www.cyberciti.biz/faq/linux-unix-pass-argument-to-alias-command/

PS in your specific case, yourSearchPattern could be origin:

git branch -d $(git branch | grep origin)

PPS as next step, would be also nice to make the deleting process more verbose, for example would be nice that you have to confirm the delete for each branch. But I think that overcomes the question...