title: What do double curly braces ({{) mean in YAML files (as used by Ansible)?
body: <p>I'm fairly new to Ansible and trying to understand the YAML file. In that i'm not clear about this piece of line - <code>file: dest={{ '{{' }} docroot {{ '}}' }</code>. Can some one please explain me what those curly braces '{{' '}}' are doing?</p>
  
  <pre><code>- name: Create Web Root
  
      when: nginxinstalled|success
  
      file: dest={{ '{{' }} docroot {{ '}}' }} mode=775 state=directory owner=www-data group=www-data
  
    notify:
  
        - Reload Nginx
  </code></pre>