#!/bin/ksh
#Author:Emmanuel Iroanya Jr
#Edited: 
#Date:December 20th, 2012
#Purpose: The purpose of this is to check the Shadow table for the epoch value and warn the users / Email of Password Expiration  seven days in advance
#This script needs the epoch.pl I found on google to work

ID=`id | cut -d ' ' -f 1`
if [[ "${ID}" != "uid=0(root)" ]]
then
   echo "You Need To Be Root To Run This Script, Please and Thank You"
   exit 1
fi

export Shadow=/etc/shadow
#Location of the epoch.pl script I found from Google to Compare the Date
export EpochSh=/usr/local/bin/epoch.pl
export Hostname=`hostname`
#Our SSE Email Address that will get notification 
export Email="!SysEngGrp@mycompany.com"

for i in `cat $Shadow`
do
export User=`echo $i |cut -d ':' -f 1`
export MaxDay=`echo $i | cut -d ':' -f 5`
echo "$MaxDay"
export Epoch=`echo $i |cut -d ':' -f 3`
export Eval=`$EpochSh $Epoch | cut -d ':' -f 2`
echo "$Eval"
if [[ $Eval == `expr $MaxDay - 7` ]]
then
echo "Password for unix user $User on `hostname` is going to expire in a week. Please change it ASAP" | mailx -s 'Password Expiration ' $Email
elif [[ $Eval == `expr $MaxDay - 6` ]]
then
echo "Password for unix user $User on `hostname` is going to expire in 6 days. Please change it ASAP" |  mailx -s 'Password Expiration ' $Email 
elif [[ $Eval == `expr $MaxDay - 5` ]]
then
echo "Password for unix user $User on `hostname` is going to expire in 5 days. Please change it ASAP" |  mailx -s 'Password Expiration ' $Email 
elif [[ $Eval == `expr $MaxDay - 4` ]]
then
echo "Password for unix user $User on `hostname` is going to expire in 4 days. Please change it ASAP" |  mailx -s 'Password Expiration ' $Email 
elif [[ $Eval == `expr $MaxDay - 3` ]]
then
echo "Password for unix user $User on `hostname` is going to expire in 3 days. Please change it ASAP" |  mailx -s 'Password Expiration ' $Email 
elif [[ $Eval == `expr $MaxDay - 2` ]]
then
echo "Password for unix user $User on `hostname` is going to expire in 2 days. Please change it ASAP" |  mailx -s 'Password Expiration ' $Email 
elif [[ $Eval == `expr $MaxDay - 1` ]]
then
echo "Password for unix user $User on `hostname` is going to expire in 1 day. Please change it ASAP" |  mailx -s 'Password Expiration ' $Email 
elif [[ $Eval == "$MaxDay" ]]
then
echo "PASSWORD FOR USER $User HAS EXPIRED.PLEASE CHANGE IT ASAP TO AVOID PRODUCTION CRON JOBS FROM FAILING AND THE RESULTING LATE NIGHT CALLS"
fi
done

for line in `cat $Shadow | grep adm`
do
 echo $line
done >passFile.txt
for i in `cat passFile.txt`
do