rvm determine and install latest version of ruby

Question

So far I only know how to do commands like

rvm 2.0.0

Fortunately Google tells me

The current stable version is 2.0.0-p2

Answer 1

I don't know of a way to have rvm just install the latest version automatically, but here's three simple commands using just rvm:

rvm reload
rvm list known # This will show all the available versions, including the latest
rvm install <latest_version> # Replace <latest_version> with the latest shown by the last command

Answer 2

rvm install ruby-head should install the last known version.

Answer 3

it is enough to:

rvm get stable
rvm use ruby --install --default 

it will update rvm, check for latest ruby - install it if missing - and set as default