Command not found: systemctl on Amazon Linux 2018.03 : <p>I am following <a href="https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/SSL-on-an-instance.html" rel="noreferrer">this Amazon AWS guide to install SSL certificates</a>.  I am running Apache on AWS EC2 using the Amazon Linux AMI 2018.03.  The first step in the guide is to run:</p>

<pre><code>sudo systemctl is-enabled httpd
</code></pre>

<p>I get "bash: systemctl: command not found".  I suspect maybe I am running Amazon Linux, not Amazon Linux 2.</p>
