To create our application, open your Terminal and in the working directory you prefer, run the following command and accept the defaults:

$ au new aurelia-testapp

The preceding command will create a new directory called aurelia-testapp; let's get into this folder and launch the application by running the following command:

$ cd aurelia-testapp
$ au run --watch

...
Finished 'writeBundles'
Application Available At: http://localhost:9000
BrowserSync Available At: http://localhost:3001

The preceding command will output a bunch of logs while the development server is starting and Aurelia is getting started. Head over to http://localhost:9000; and you should see something similar to the following: