To implement the Driessen Model, we must first create the dev branch from the master branch. To check which branch we are currently on, we can run git branch --list or simply git branch:

$ git branch
* master

This returns a list of all branches, with an asterisk (*) next to the currently active branch, which is currently master. To create a new dev branch from the current branch, we can run git branch dev.

However, we are instead going to run git checkout -b dev master, which creates a new branch and makes it active at the same time:

$ git checkout -b dev master
Switched to a new branch 'dev'
$ git branch
* dev
  master