title: Using ant, find files matching a regular expression and search if a substring in present in the file
body: <p>I have a directory containing 2 files:</p>
  
  <p>abc_2010-14-12.log</p>
  
  <p>abcdef.log</p>
  
  <p>I want to search for a substring in the 1st file. But i dont know the exact file name as it has timestamp appended to it. I think i will have to use regular expression in the file name. </p>