We have git branch -D BRANCH_NAME command to delete a specific branch in git repository. But

How should we clean up a repository which has a ton of old branches ?

Git support it in a single line command.


Unfortunately, Git does not support deleting branches with branh name completion. Although, in bash you can do that with Git and grep command combination.
 For example, I want to delete branches which have PREFIX- in name. I used the following command:
git branch -D PREFIX-*
but git return error: branch 'PREFIX-*' not found.

We should use the following instead to make git works:

git branch -D `git branch | grep -E 'PREFIX-*'`