title: Rails - rake build error
body: <p>I'm setting up my dev environment for a new project, where the instructions use rake (something I've never used).</p>
  
  <p>I've just imported some JSON data into mongodb with </p>
  
  <pre><code>mongoimport --db mydevenvironment --port 27017 --collection places --file mydir/tmp/places.json
  </code></pre>
  
  <p>The next command is to use rake to build, as follows:</p>
  
  <pre><code>rake build:devenvironment_from_files[,,,,1/2/3/4/5/6/7/8/9/10/11/12/13/14/15/16/17/18/19,27017] --trace
  </code></pre>
  
  <p>I've found very little documentation anywhere online for the rake build command.  How does it work exactly, and what do the array of numbers signify? Are these file locations?</p>
  
  <p>The error I get is:</p>
  
  <pre><code>zsh: no matches found: build:devenvironment_from_files[,,,,1/2/3/4/5/6/7/8/9/10/11/12/13/14/15/16/17/18/19,27017]
  </code></pre>
  
  <p>But I've no idea where to start diagnosing this.</p>