title: What does grep * do?
body: <p>I'm reading <a href="http://tldp.org/HOWTO/Bash-Prog-Intro-HOWTO-3.html" rel="nofollow noreferrer">this tutorial</a></p>
  
  <p>and there is this line:</p>
  
  <pre><code>    grep da * 2&gt; grep-errors.txt
  </code></pre>
  
  <p>It is too cryptic and the author does not break down the syntax.</p>