title: And statement using grep/regular expressions
body: <p>I'm using grep to search for text within a specific directory. I would like to return rows of text that contain stringA AND stringB. </p>
  
  <p>I know that doing <strong>grep "stringA|stringB"</strong> is effectively an OR statement, is there something I can do, maybe using regex, that would allow me to run an AND statement ?</p>
  
  <p>Many Thanks</p>