title: zcat to grep with file name
body: <pre><code>ls -ltr|grep 'Mar  4'| awk '{print $9 }'|xargs zcat -fq |grep  12345
  </code></pre>
  
  <p>I'm now using this command to list the records that contain my numeric string how can i alos get this command to print the name of the file the strings were found in?</p>
  
  <p>thanks</p>