title: using tail to view the access logs on my server
body: <p>I'm on centOS and new to using tail to view the access logs on my server, and I'm not able to understand the meaning of every information I see. For example, one of the info it shows me is:</p>
  <pre><code>123.456.789.10 -- [03/Dec/2021:22:30:47 +0000] &quot;POST / HTTP/1.1&quot; 200 20 &quot;-&quot; &quot;Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/81.0.4444.129 Safari/537.36&quot;
  </code></pre>
  <p>I understand what some of these information means such as the IP addresses, browser, dates, time, etc. But for others, I'm just guessing what they mean and what their usefulness it. Can someone help me with explaining these parts: <code>+0000] &quot;POST / HTTP/1.1&quot; 200 20 &quot;-&quot;, (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko)</code>?</p>