title: Regex to match date string greater than certain date
body: <p>I have a requirement to fetch date (yyyyMMdd format) directories greater than certain date .
  For example, need to fetch all dates starting from 20190605 .</p>
  
  <p>I have directories like below.</p>
  
  <blockquote>
    <p>/tmp/20190607 /tmp/20190606 /tmp/20190605 /tmp/20190604</p>
  </blockquote>
  
  <p>Need a regexp pattern to fetch directories greater than 20190605 .</p>
  
  <p>TIA</p>