Due:  Mon Feb 10

Write a program that
- Opens the password file
- Read each line of the password file
- Write to error file if the username
    Does not start with a lowercase letter
    Is not between 4..12 characters long
- Write to error file if
    The shell is not /bin/bash or /bin/sh


For 1% bonus
  If there are duplicate UID numbers, write to the error file