ntpdate修改系统时间
ntpdate time1.aliyun.com && hwclock --systohc
echo "@daily /usr/sbin/ntpdate time1.aliyun.com ; /sbin/hwclock --systohc" >> /var/spool/cron/root
ntpdate time1.aliyun.com && hwclock --systohc
echo "@daily /usr/sbin/ntpdate time1.aliyun.com ; /sbin/hwclock --systohc" >> /var/spool/cron/root