compare_lines.rb

#!/usr/bin/ruby

# script to compare and see what lines are in file1 but not file2

f1 = File.open('file1.txt')
f2 = File.open('file2.txt')

file1lines = f1.readlines
file2lines = f2.readlines

file1lines.each do |e|
  if(!file2lines.include?(e))
  puts e
  end
end