[jimmcslim]

"This will download and install all updates available for your Mac: sudo softwareupdate -i -a"

I'm assuming that it won't install App Store software that is in your account but not installed on the current machine? Which if so is a shame that Apple haven't exposed this via the command line (preferably specifying the name of the application to install).

[whiskykilo]

I believe it does. I will spin up an OS X VM and test it later tonight, since my MBPr is fully up to date. I will of course update the site with what I find.

[whiskykilo]

You can actually specify the application as well, IIRC. I will verify all of that later this evening when I'm in a place to do it.

[whiskykilo]

I've updated the site to include the details you were asking about. I was able to test it all on a OS X VM with great success. http://machacks.whiskykilo.com/hacks/app-store.html