title: echo >&2 "some text" what does it mean in shell scripting
body: <p>I have seen <code>echo</code> being used like this in many places:</p>
  
  <pre><code>echo &gt;&amp;2 message text ...
  </code></pre>
  
  <p>What does this mean?</p>
  
  <p>I understand <code>2&gt;&amp;1</code>, however, I am not sure how to interpret the usage above.</p>
  
  <p>Can anyone please explain?</p>