Delete all branches except master or main branch

To delete all branches in your Git repository except master, simply issue the following command:

$ git branch | grep -v "master" | xargs git branch -D

If you want to delete branches such as master-prod, master-test or master-ui, you can adjust the RegEx used by the grep as follows:

$ git branch | grep -v " master$" | xargs git branch -D

Remove all Git branches but main

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To delete all branches in Git except main, simply replace the grep for master with a grep for main:

$ git branch | grep -v "main" | xargs git branch -D

$ git branch | grep -v " main$" | xargs git branch -D