title: What does it mean to add a directory to your PATH?
body: <p>I'm following the Python tutorial for Google App Engine, and this is the step:</p>
  
  <blockquote>
    <p>Add the google_appengine directory to your PATH: export
    PATH=$PATH:/path/to/google_appengine/</p>
  </blockquote>
  
  <p>source: <a href="https://cloud.google.com/appengine/downloads#Google_App_Engine_SDK_for_Python" rel="nofollow">https://cloud.google.com/appengine/downloads#Google_App_Engine_SDK_for_Python</a></p>