Understanding the guts of Ruby Version Management by rolling your ownI've been tinkering with a fresh install of Ubuntu 12.10, setting up a nice clean development environment. One of the first things to do, of course, is implement some sort of Ruby version management. RVM and rbenv seem to be the clear winners in this arena, though there are a lot of tools out there that do a similar job.Writing your own version management for your Rubies isn't actually all that difficult. At it's core, we need ...