With both of our tmux windows in a good working state as we left them in the previous section, let’s check out the Backbone.js code base. Run this command from either tmux terminal:
$ git clone firstname.lastname@example.org:documentcloud/backbone.git
Move into the newly created backbone directory and open the file test/model.js in any terminal-based editor, as you can see here:
$ cd backbone
$ vim test/model.js
This file contains some unit tests for Backbone’s model components. We can run these test by opening the test/index.html file in a browser. Split the tmux session horizontally by pressing Ctrl-b ", so that your window looks like the following figure.
Then run this command in ...