PREIN
/bin/sh
/usr/share/rpm-helper/add-user ntp $1 ntp /etc/ntp /bin/false
PREUN
/bin/sh
/usr/share/rpm-helper/del-service ntp $1 ntpd
POSTIN
/bin/sh
/usr/share/rpm-helper/add-service ntp $1 ntpd /bin/touch /etc/ntp/step-tickers
POSTUN
/bin/sh
/usr/share/rpm-helper/del-user ntp $1 ntp