title: How do I append text to a file?
body: <p>What is the easiest way to append text to a file in Linux?</p>
  
  <p>I had a look <a href="https://stackoverflow.com/questions/4640011/append-text-to-file-from-command-line-without-using-io-redirection">at this question</a>, but the accepted answer uses an additional program (<code>sed</code>) I'm sure there should be an easier way with <code>echo</code> or similar.</p>