title: Fastest way to ping a network range and return responsive hosts?
body: <p>Constraints:<br>
  1. Speed matters.<br>
  2. I am allowed to ping once.  </p>
  
  <p>I'm debating whether to use Python or shellscripting. Is there a method faster than <code>bash</code>?</p>
  
  <p>Here is the current code,</p>
  
  <pre><code>for ip in $(seq int1 int2); do
      ping -c 1 xxx.xxx.xxx.$ip | grep "bytes from" &amp;
  done
  </code></pre>
  
  <p>Anything faster than this?</p>