What is the usual way to install a gem in ruby under RVM?

Question

I'm new on Ruby on Rails.

Now I want to use rvm; in this article http://www.skorks.com/2010/01/using-multiple-rubies-seamlessly-on-the-one-machine-with-rvm/

it introduces:

sudo gem install rvm

to allow for a different ruby version. What confused me is gem is a package installer for ruby. Does it require the ruby language preinstalled? Do I need to have a ruby version installed first?

What's the usual way to install gem in RVM?

Answer 1

我很确定您不需要安装ruby来安装rvm，只需按照http://rvm.io/rvm/install/上的说明进行操作