#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
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
EpochSh=`perl -e 'print time, "\n"'`
export Hostname=`hostname`
#Our SSE Email Address that will get notification
export Email="emmanuel@mycompany.com"
for line in `cat $Shadow | grep adm`
do
 echo $line
done >passFile.txt
for i in `cat passFile.txt`
do
User=`echo $i |cut -d ':' -f 1`
MaxDay=`echo $i | cut -d ':' -f 5`
echo "$MaxDay"
Epoch=`echo $i |cut -d ':' -f 3`
Eval=`$MaxDay+$Epoch-$EpochSh`
echo "$Eval"
                 if [[ $Eval -lt 7 ]]
                 then
                 echo "Password for unix user $User on `hostname` is going to expire in less than a week. Please change it ASAP" | mailx -s 'Password Expiration ' $Email
                 elif [[ $Eval -le 0 ]]
                 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