title: How to add Chromedriver to PATH in linux?
body: <p>Trying to use Selenium with Chrome in a python script.</p>
  
  <p>I get the following error:</p>
  
  <pre><code>WebDriverException: Message: 'chromedriver' executable needs to be in PATH. Please see https://sites.google.com/a/chromium.org/chromedriver/home
  </code></pre>
  
  <p>I know the location of the chromedriver executable. 
  How do I add it to the PATH?</p>
  
  <p>thank you</p>