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     ntpdate time.nist.gov
     ntpd
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     ntpdate host
3. ͬ²½µ½bios
     hwclock -w
4.ÿÌìÖ´ÐÐͬ²½£¬ÔÚ/etc/crontabÖмÓÒ»¾ä
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5.ÉèÖÃcronºÍntpd·þÎñ¿ª»úÆô¶¯Îª
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   chkconfig -level 35 ntpd on
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linuxϰ²×°rpc.rstatd

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tar zxvf rpc.rstatd-4.0.1.tar.gz
cd rpc.rstatd-4.0.1
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