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Created March 4, 2021 04:56
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使用 rdate 替代ntp 功能
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rdate.md

总有那么些蛋疼的机房，为了所谓的这安全，将NTP 服务器一刀切了。这时候时间同步就是一个问题，不过我们还可以使用 rdate 来解决。

yum -y install rdate
rdate -s time.nist.gov

cat > /etc/cron.daily/rdate << "EOF"
#!/bin/sh
rdate -s time.nist.gov
/sbin/hwclock --systohc
EOF

chmod +x /etc/cron.daily/rdate
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