Turning asynchronous networking inside-out

I'm working through chapter 1 of "The Ruby on Rails Tutorial" and I'm already blanching at the number of invocations of sudo that are present. I'm thinking to myself, "surely there must be a way to do this while globally installing as little software as possible?" After all, sudo install is like using global variables to manage state. — @trenton42, via https://twitter.com/zigg/status/496002096085209088 Avoiding the global installation of software that's for a specific project is not just a...