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Help with advanced tar, ls, and egrep command...

I am migrating users off of a Linux mail server and need to grab the "password" files that the 3rd party mail software package uses for each user. Here is the scenario:

/var/*mail-program*/Accounts/user1.ext
/var/*mail-program*/Accounts/user2.ext

Inside the user#.ext file (text file) is a "LastLogin" date, and I would like to only grab those users that have logged into the mail this current year. On top of that the mail file is in the same directory and I only want to grab the password file. After that if I can tar the files, to send them to another server that would be great.

Has anyone used any deep ls / grep / egrep / tar commands for similar operations?

Any help would be appreciated.

Thanks

Code:

#!/bin/bash

# Asserting that user1.ext corresponds to user1.password

# Get the user files for people who have logged in this year

mkdir /tmp/password_files

for user in $(grep 'LastLogin' /var/mail-program/Accounts/*.ext | grep 2009 | awk -F: '{print $1}'); do

    cp -p ${user:0:${#user}-4}.password /tmp/password_files

done

tar cjvf /tmp/password_files.tar.bz2 /tmp/password_files



for password_file in /tmp/password_files/*.*; do

    shred -vzu $password_file &

done

rmdir /tmp/password_files