title: Non-blocking pipe using popen?
body: <p>I'd like to open a pipe using <a href="http://linux.die.net/man/3/popen" rel="noreferrer"><code>popen()</code></a> and have non-blocking 'read' access to it.</p>
  
  <p>How can I achieve this?</p>
  
  <p>(The examples I found were all blocking/synchronous)</p>