title: How to use grep efficiently?
body: <p>I have a large number of small files to be searched. I have been looking for a good de-facto multi-threaded version of <code>grep</code> but could not find anything. How can I improve my usage of grep? As of now I am doing this:</p>
  
  <pre><code>grep -R "string" &gt;&gt; Strings
  </code></pre>