automate installation + running of iphone app in simulator outside of xcode

I'd like to instal开发者_开发技巧l + run my app built outside of xcode (through xcodebuild) through a similar sort of command line tool. How could I get it on the simulator?

I've looked at a few related posts:

Where does the iPhone Simulator store its data? Cleaning up the iPhone simulator

None of these posts describe what that UUID is, nor what the other files are in that directory.

So how I could I replicate XCode's installation + starting the app through a command line tool?