Hi I'm quite new with scripting and am having a few problems with even the simpleist things. I am trying to create a script that will tell me all users on my system that haven't logged in for 6 months. This is what i've got at the moment as a start but this isn't working and it is the easy bit. The list of user names and directory are listed below the script.

while
read uname hdir
do
if echo $hdir | grep '^/home/' > /dev/null
then
last -n 1 $uname > lastlogin
sleep 5
fi
done

Please let me know what i'm doing wrong.

Thanks in advance for your help.