hack.py

#! /usr/bin/env python




try:
    fp = open('hack.txt','r') #hack.txt is the original passwd dump
    up = open('uniq.txt','r') #uniq.txt is the reduced passwd dump
    keys = up.readlines()
    stuff = []
    for st in fp.readlines():
        stuff.append(st)
    for key in keys:
        if stuff.count(key) == 1:
            print key
except IOError,e:
    print "No Such files",e