title: Unix command to search for text string in all files
body: <p>How do I get unix to search inside ALL files for a the string "hello"?</p>
  
  <p>I've tried the following but it doesn't work:</p>
  
  <pre><code>sudo grep "hello" | find / -name "*" 2&gt;/dev/null
  </code></pre>
  
  <p>Does anyone have any other ideas?</p>
  
  <p>Thank you.</p>