Post published:14/11/2010 Post category:Linux general issues 15 * * * 5 /usr/sbin/ntpdate us.pool.ntp.org >/dev/null 2>&1 20 * * * 5 /sbin/hwclock --systohc >/dev/null 2>&1 12 15 * * * 5 /usr/sbin/ntpdate us.pool.ntp.org >/dev/null 2>&120 * * * 5 /sbin/hwclock --systohc >/dev/null 2>&1