title: What does `Chef::Config[:file_cache_path]` do exactly?
body: <p>First off, I apologize for asking such a dumb question. But the reason I ask is because I'm having a hard time finding an answer. I've tried searching Chef's docs, but I have not found a clear explanation.</p>
  
  <p>So what exactly does<code>Chef::Config[:file_cache_path]</code> provide? I've read that its better to use this instead of harding coding a filepath. But what does it evaluate to?</p>
  
  <p>In this particular snippet</p>
  
  <pre><code>newrelic_agent = Chef::Config[:file_cache_path] + '/rewrelic_nginx_agent.tar.gz'
  
  
  remote_file newrelic_agent do
    source 'http://nginx.com/download/newrelic/newrelic_nginx_agent.tar.gz'
    mode "0744"
  end
  </code></pre>
  
  <p>Thanks in advance.</p>