问题
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-p247.
But shouldn't I be able to use rvm to do that step for me? I can't figure out how to just tell rvm to install the latest version of ruby, without manually specifying it.
回答1:
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
回答2:
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
回答3:
rvm install ruby-head should install the last known version.
来源：https://stackoverflow.com/questions/17599229/rvm-determine-and-install-latest-version-of-ruby