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                                                            先设置时区:# tzsetup
 再与国家授时中心服务器对时:
 # ntpdate 210.72.145.44
 以后自动同步:
 首先修改/etc/rc.conf添加ntpd_enable="YES"到最后一行。
 然后配置对时服务器:
 # vi /etc/ntp.conf
 server 210.72.145.44 prefer
 server 159.226.154.47
 server 127.127.1.0
 fudge 127.127.0.1 stratum 5
 restrict default ignore
 restrict 127.0.0.0 mask 255.0.0.0
 restrict 192.168.0.0 mask 255.255.255.0 noquery nopeer notrust
 restrict 210.72.145.44 noquery
 restrict 159.226.154.47 noquery
 driftfile /var/db/ntpd.drift
 
 /var/run/xntpd.pid
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