How to change default app for all files of particular file type through terminal in OS X?

I have a simpler way. You'll want Homebrew if you don't already have it: Install duti: Now you need to find the id of the app you want to use, and assign it to the extension you want to use it for. In this example, I already use Brackets for and I want to also use it for files instead of xcode. Get the default app id for files: The last line is the id. Use this app id for all files: