title: How to rename all file names under a folder to add modified date as prefix in Windows
body: <p>I have a folder <strong>C:\Documents</strong></p>
  <p>I have over <strong>100</strong> files under the folder.</p>
  <pre><code>file1.docx 
  blah.docx
  .
  .
  </code></pre>
  <p>I would like to rename all files as below where modified_date is from the <code>LastWriteTime</code> timestamp on the file:</p>
  <p><strong>A_{modified_date}_filename</strong>  note that that must be <strong>ddMMyyyy</strong> format.</p>
  <p>Example output:</p>
  <pre><code>A_01012015_file1.docx
  A_20122014_blah.docx
  </code></pre>
  <p>I can write a simple console application to achieve this. But Just wondering if there is an existing tool built-in or by using Powershell?</p>
  <p>Thanks</p>