title: Elixir System.cmd isn't working
body: <pre><code>System.cmd "echo", ["hello"] 
  </code></pre>
  
  <p>is not working in windows. I am trying to run this in <code>iex</code>. This is the error I am getting:</p>
  
  <blockquote>
    <p>(ErlangError) Erlang error: :enoent<br>
        (elixir) lib/system.ex:605: <code>System.cmd("echo", ["hello"], [])</code></p>
  </blockquote>