title: Using perl to split file in flat text
body: <p>I have a flat file that are created with offsets e.g. row 1: char 1 - 3 = ID, 4-19 = user name, 20 - 40 = last name, etc...</p>
  
  <p>What's the best way to go about creating a perl script to read this?  and is there any way to make it flexible based on different offset groups?  Thank you!</p>