title: How to resolve "gpg: command not found" error during RVM installation?
body: <p>I have a new mac pro (OS X 10.9.5) that I get to set up from scratch. I want to install RVM and the first thing it says to do is: </p>
  
  <blockquote>
    <p>Install mpapis public key (might need <code>gpg2</code> and or <code>sudo</code>)</p>
  
  <pre><code>gpg --keyserver hkp://keys.gnupg.net --recv-keys D39DC0E3
  </code></pre>
  </blockquote>
  
  <p>When I tried I got:</p>
  
  <pre><code>gpg --keyserver hkp://keys.gnupg.net --recv-keys D39DC0E3
  zsh: command not found: gpg
  </code></pre>
  
  <p>I've tried to find a good guide on how to overcome this that also looks trustworthy but I've had no luck.</p>
  
  <p>Can someone explain what <code>gpg</code> is, why I dont already have it, and how do I get it the right way.</p>