lines-in-2-not-in-1

#! /bin/bash
# Print lines in 2 not in 1
# Data must be sorted first

if [ $# -eq 2 ]; then
	grep -F -x -v -f "$1" "$2"
else
	echo "2 filer kreves som input, 1. needle, og 2. haystack"; 
	exit;
fi