PREIN

/bin/sh

if getent passwd hobbit 1>/dev/null 2>&1
then
echo "hobbit user present"
else
/usr/share/rpm-helper/add-user hobbit $1 hobbit /usr/lib/hobbit /bin/sh 
fi
gpasswd -a hobbit adm

PREUN

/bin/sh

/usr/share/rpm-helper/del-service hobbit $1 hobbit-client

POSTIN

/bin/sh

# if no server is installed, start the client via init script
if [ -f /etc/init.d/hobbit ]
then
echo "server package installed, not starting client at boot"
else
/usr/share/rpm-helper/add-service hobbit $1 hobbit-client 
fi