title: How to modify PATH for Homebrew?
body: <p>Trying to install ruby 1.9.3, read that I need to install homebrew first. Ran brew doctor, and it's giving me a bunch of warnings. One of which is:</p>
  
  <blockquote>
    <p>Warning: /usr/bin occurs before /usr/local/bin This means that
    system-provided programs will be used instead of those provided by
    Homebrew. The following tools exist at both paths:</p>
  
  <pre><code>easy_install
  easy_install-2.6
  </code></pre>
    
    <p>Consider amending your PATH so that /usr/local/bin is ahead of
    /usr/bin in your PATH.</p>
  </blockquote>
  
  <p>How does one do what it's asking here?</p>