title: Create environment variables on Linux for secrets.yml
body: <p>On my secrets.yml file I have the following code:</p>
  
  <pre><code>production:
    secret_key_base: &lt;%= ENV["SECRET_KEY_BASE"] %&gt;
  </code></pre>
  
  <p>On my Ubuntu 14.04 I have run the following command:</p>
  
  <pre><code>export SECRET_KEY_BASE=adsfadfasdfasdfasdfasasdfasdfa
  </code></pre>
  
  <p>However, when I start the rails app, I get the following error:</p>
  
  <pre><code>Missing `secret_key_base` for 'production' environment, set this value in `config/secrets.yml`
  </code></pre>
  
  <p>What am I doing wrong?</p>