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    <p>I'm going to assume that you're new to Ruby as well, just in case doing so can help others who need this answered. Please don't take offense.</p> <p>It looks like your installation of Ruby is out of date or broken. Mac OSX comes with a default Ruby installed, but I honestly have no idea if it's complete or out of date because I always install my own.</p> <h1>Getting a Build Environment Ready</h1> <p>By default, MacOSX does not have the capacity to build C applications, which is what the "standard" ruby runtime is. So, you need to install a C building toolchain, which in many cases is GCC &amp; friends.</p> <h2>Without XCode Installed</h2> <ol> <li>Find the "<em>Additional Developer Tools</em>" link on the <a href="https://developer.apple.com/xcode/" rel="nofollow">XCode product page</a></li> <li>Click it</li> <li>Find and install the "<em>Command Line Tools</em>" for your version of OSX</li> </ol> <h2>With XCode Installed</h2> <ol> <li>Open XCode</li> <li>Open the Downloads preferences pane</li> <li>Find the "<em>Command Line Tools</em>" and install them</li> </ol> <p>Once you've installed them, close any open terminal windows before proceeding to ensure that the build tools are in your path.</p> <h1>Installing Ruby</h1> <p>There are a few ways to get Ruby going on a new linux system, but the most widely recommended one is to use <strong>rvm</strong>.</p> <p>RVM is a tool which helps install and manage different Ruby environments, so you can easily switch between them and upgrade (or downgrade for a specific project or issue). <a href="https://rvm.io/rvm/install/" rel="nofollow">It's found here (direct link to the installation instructions)</a> You most likely want to do the first of the Quick guided installs, which will simply install it for your user. It'll also install the latest stable version of ruby.</p> <p>There is a GUI for installing RVM, called <a href="http://unfiniti.com/software/mac/jewelrybox" rel="nofollow">JewelleryBox</a>. It's fairly pretty and will notify you when there's new versions.</p> <p>Once the app itself is installed:</p> <ol> <li>Click Add Ruby in the toolbar</li> <li>Choose a Ruby version. MRI is the "Official" ruby... It's the one which kicked everything off. For now, the latest stable is ruby-1.9.3-p327, so pick that one ;)</li> <li>Make sure the <em>make default</em> checkbox is ticked, then hit the "Install" button.</li> <li>Hopefully everything worked!</li> </ol> <h1>Installing Rails</h1> <p>Ruby's almost ubiquitous means of fetching libraries, including Rails, is with rubygems and the <code>gem</code> command. In this case, <code>gem install rails</code> should get you started. Oh, and make sure you open a new terminal window after installing a new ruby, and check it's installed with <code>ruby -v</code>.</p> <h1>Another nice thing</h1> <p>Bundler is a neat package manager built on top of rubygems. Install it with <code>gem install bundle</code> (oh, and Rails will install it as a dependancy). Its got its docs at <a href="http://gembundler.com/" rel="nofollow">this link</a> but for basic, raw rails, you shouldn't need to do anything with it.</p> <h1>Good Luck</h1> <p>Have a blast learning Rails, I hope you find it makes webapp development more fun for you ^_^</p>
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    1. COAwesome yes new to Ruby too! Thanks for your help :) towards the end of installing the ruby version you suggested through jewellerybox i got this: `Error running './configure --enable-shared --disable-install-doc --prefix=/Users/kangaroobin/.rvm/rubies/ruby-1.9.3-p327 --with-opt-dir=/Users/kangaroobin/.rvm/usr', please read /Users/kangaroobin/.rvm/log/ruby-1.9.3-p327/configure.log`
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    2. COActually I noticed more erros, I couldn't fit it in a comment: http://jsfiddle.net/Jw2Ah/
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    3. CODo you have XCode installed?
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