title: PDI - Multiple file input based on date in filename
body: <p>I'm working with a project using Kettle (PDI).
  I have to input multiple file of .csv or .xls and insert it into DB.</p>
  
  <p>The file name are AAMMDDBBBB, where AA is code for city and BBBB is code for shop. MMDD is date format like MM-DD. For example LA0326F5CA.csv.</p>
  
  <p>The Regexp I use in the Input file steps look like <code>LA.\*\\.csv</code> or <code>DT.*\\.xls</code>, which is return all files to insert it into DB.</p>
  
  <p>Can you indicate me how to select the files the file just for yesterday (based on the MMDD of the file name).</p>