PREIN

/bin/sh

# Create the firebird user and group if it doesn't exist
/usr/share/rpm-helper/add-group firebird $1 firebird  
/usr/share/rpm-helper/add-user firebird $1 firebird /var/lib/firebird/data /sbin/nologin 
# Add gds_db to /etc/services if needed
FileName=/etc/services
newLine="gds_db          3050/tcp  # Firebird SQL Database Remote Protocol"
oldLine=`grep "^gds_db" $FileName`
if [ -z "$oldLine" ]; then
	echo $newLine >> $FileName
fi

PREUN

/bin/sh

%_post_userdel firebird
/usr/share/rpm-helper/del-group firebird $1 firebird