title: "Cannot open /var/log/sysstat/sa16 Please check if data collecting is enabled in /etc/default/sysstat"
body: <p>I want to look at disk I/O info on my machine/in general. Found some help from <a href="https://unix.stackexchange.com/questions/55212/how-can-i-monitor-disk-io">https://unix.stackexchange.com/questions/55212/how-can-i-monitor-disk-io</a></p>
  
  <p>After recently installing sysstat package and attempting to use sar command (I assume) as that person did, I was instead prompted to check if data collecting was enabled in the above specified file. </p>
  
  <p>After: </p>
  
  <pre><code>sudo vim /etc/default/sysstat
  </code></pre>
  
  <p>I changed the only line of uncommented code:</p>
  
  <pre><code>ENABLED="false"
  </code></pre>
  
  <p>to:</p>
  
  <pre><code>ENABLED="true"
  </code></pre>
  
  <p>However, I am still not able to run sar and get the expected output in my terminal. </p>