title: upgarde Ruby to 1.8.7 mac os 10.5
body: <p>I'm trying to upgrade Ruby to 1.8.7 but I got problems ! 
  I follow <a href="http://hivelogic.com/articles/ruby-rails-leopard/" rel="nofollow">this tutoriel</a> whith no success !
  I tried to install RVM but with this command </p>
  
  <blockquote>
    <p>$ bash &lt; &lt;(curl -s <a href="https://rvm.beginrescueend.com/install/rvm" rel="nofollow">https://rvm.beginrescueend.com/install/rvm</a>)</p>
  </blockquote>
  
  <p>I got an error :</p>
  
  <blockquote>
    <p>Missing name for redirect</p>
  </blockquote>
  
  <p>I really don't understand how to tell the system to use ruby 1.8.7 ! 
  I need to upgrade because I need to upgarde rails to version 3.</p>
  
  <p>I already did a lot a search on stackoverflow, google but I'm stuck ! I don't find the solution ! </p>
  
  <p>Thanks to help me !</p>