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    <p>Below I try to resume my rails installation. It should work well.</p> <p><strong>1) Download Xcode from Apple Application Store :</strong></p> <p>use this link : <a href="http://itunes.apple.com/fr/app/xcode/id448457090?mt=12" rel="noreferrer">xcode</a></p> <p><strong>2) Install xcode :</strong></p> <p>Use finder=>applications to locate "Xcode installation icon and double-click on it to begin the installation</p> <p>**2b.) For xcode 4.3. After installing xcode, launch it, navigate to Xcode->Preferences, Downloads tab. Install Command Line Tools. This will download and install C, compiler, loader and other command line utilities needed to compile &amp; build the Ruby packages. </p> <p><strong>3) use a terminal to install git:</strong></p> <pre><code>gem install git </code></pre> <p>and put this line in your .bash_profile (create one if none exists) :</p> <pre><code>export PATH=$PATH:/usr/local/git/bin/ </code></pre> <p><strong>4) use a terminal to install rvm:</strong></p> <pre><code>bash &lt; &lt;(curl -s https://raw.github.com/wayneeseguin/rvm/master/binscripts/rvm-installer ) </code></pre> <p>and run this command to update your .bash_profile :</p> <pre><code>echo '[[ -s "$HOME/.rvm/scripts/rvm" ]] &amp;&amp; . "$HOME/.rvm/scripts/rvm" # Load RVM function' &gt;&gt; ~/.bash_profile </code></pre> <p><strong>5) use a terminal to install ruby 1.9.2 and rails:</strong> </p> <pre><code>rvm autolibs enable rvm install 1.9.2 rvm --default 1.9.2 gem update gem install rails </code></pre>
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    1. POInstalling Ruby on Rails - Mac OS Lion
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    1. USAlain Beauvois
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    1. COI want to install Ruby 1.9.2, because there is a problem with OpenSSL in Ruby 1.9.3. I'm on OS X 10.7.3 and have Xcode 4.3.0. However Xcode 4.2+ is only supported by Ruby 1.9.3. http://www.christopherirish.com/2011/09/02/ruby-1-9-2-segmentation-fault-and-openssl/
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      1. USneoneye
    2. COby the way, just a trivial reminder, but don't forget to source your .bash_profile after adding those lines to your profile by doing '. ~/.bash_profile' ... and also, in step 3, for convenience sakes, you may have to do 'sudo gem install git' and also 'echo "export PATH=$PATH:/usr/local/git/bin/" >> ~/.bash_profile' in the terminal
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      1. USDavid T.
    3. COThis also works well on Ubuntu.
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