Completed setup guide for Ubuntu

docs/getting-started/setup/ubuntu.md

@@ -4,15 +4,34 @@ title: Getting Started - Setting up Ubuntu
 ---
 # Ubuntu
 
-## Installing Ruby and RubyGems
+## Installing Ruby
 
 The easiest way to install Ruby and RubyGems is via Ubuntu's built
 in package manager:
 
 {% highlight bash %}
-$ sudo apt-get install
+$ sudo aptitude install ruby1.8-dev ruby1.8 ri1.8 rdoc1.8 irb1.8 libreadline-ruby1.8 libruby1.8 libopenssl-ruby wget
+$ sudo ln -s /usr/bin/ruby1.8 /usr/bin/ruby
+$ sudo ln -s /usr/bin/ri1.8 /usr/bin/ri
+$ sudo ln -s /usr/bin/rdoc1.8 /usr/bin/rdoc
+$ sudo ln -s /usr/bin/irb1.8 /usr/bin/irb
 {% endhighlight %}
 
+## Installing RubyGems
+
+It is recommended that you install RubyGems from source. All the dependencies
+for RubyGems were installed above already so installing from source is
+fairly painless:
+
+{% highlight bash %}
+$ cd ~
+$ wget http://rubyforge.org/frs/download.php/69365/rubygems-1.3.6.tgz
+$ tar xvzf rubygems-1.3.6.tgz
+$ cd rubygems-1.3.6
+$ sudo ruby setup.rb
+$ sudo ln -s /usr/bin/gem1.8 /usr/bin/gem
+{% endhighlight bash %}
+
 You'll also want to verify that RubyGems is fully updated, since the
 packages can often get out of date: