title: How to show a 'grep' result with the complete path or file name
body: <p>How can I get the complete file path when I use <code>grep</code>?</p>
  <p>I use commands like</p>
  <pre class="lang-none prettyprint-override"><code>cat *.log | grep somethingtosearch
  </code></pre>
  <p>I need to show the result with the complete file path from where the matched result were taken out.</p>
  <p>How can I do it?</p>