title: echo "-e" doesn't print anything
body: <p>I'm using GNU bash, version 3.00.15(1)-release (x86_64-redhat-linux-gnu). And this command:</p>
  
  <pre><code>echo "-e" 
  </code></pre>
  
  <p>doesn't print anything. I guess this is because "-e" is one of a valid options of echo command because echo "-n" and echo "-E" (the other two options) also produce empty strings.</p>
  
  <p>The question is how to escape the sequence "-e" for echo to get the natural output ("-e").</p>