title: Comparing Columns in Different CSV then Print Non-Matches
body: <p>I'm a scripting newbie and am looking for help in building a BASH script to compare different columns in different CSV documents and then print the non-matches. I've included an example below.</p>
  
  <p>File 1
  Employee ID Number,Last Name,First Name,Preferred Name,Email Address</p>
  
  <p>File 2
  Employee Name,Email Address</p>
  
  <p>I am wanting to compare the email address column in both files. If File 1 does not contain an email address found in File 2, I want to output to a new file.</p>
  
  <p>Thanks in advance!</p>