title: Redirecting iostat output to a file
body: <p>Why the output of iostat is not redirected to the file in the following command:</p>
  
  <pre><code>iostat -x 3 | awk '/sda/ { print $11, $12}' &gt; /tmp/disk_utilization 
  </code></pre>
  
  <p>Is iostat behaving differently than any other command?</p>
  
  <p>Thx in advance</p>