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RVM and Ruby
used to deploy your application because you’re hosting it on GitHub. Finally, curl
allows you to connect to a URL and download its content. You’ll use this last package
to install RVM.
To install these packages, run this command:
sudo aptitude -y install build-essential git-core curl
The sudo part of this command tells Ubuntu to run a command as a super-user (root).
14.2 RVM and Ruby
You could install Ruby by downloading the package manually, extracting it, and then
running the necessary commands yourself, but that’s boring. You could also install it
using the package manager that comes with Ubuntu, but the Ruby that it provides is
old and has been known to be broken.
Wouldn’t it be nice if there was a tool that would install Ruby for you? There is! It’s
called RVM!
14.2.1 Installing RVM
RVM provides several benefits over a standard Ruby compile, such as the ability to easily
install and upgrade your Ruby install using commands like rvm install 1.9.2 to
install Ruby 1.9.2. No digging for links on the http://ruby-lang.org site for you, no
siree.
There are a couple of ways you can install RVM. The first is a user-based install,
installing it in an .rvm directory within the user’s own directory. But you’re going to
want to access gems at a system-level later on in this chapter, so it’s best to install RVM
at a system level. 14 To do this, run this command:
sudo bash <