title: What language are nginx conf files?
body: <p>I want to write some more complex conditions in my Nginx configuration files but I'm not sure of the syntax and can't find docs describing what you can do beyond the basics in the examples and I can't seem to find this on the Nginx forums or on the mailing list.</p>
  
  <p>For example, is it possible for me to have an <code>unless</code> condition?</p>