[CentOS] Set hardware clock manually

Barry L. Kline blkline at attglobal.net
Thu Feb 7 17:23:24 UTC 2008


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Joseph L. Casale wrote:
> I can't reboot a server to set the hardware clock to UTC time, but CentOS was installed with the assumption that the PC was running UTC.
> Is it possible to update the hardware clock to the right time and therefore allow CentOS to maintain the right time without rebooting? I am hoping to use this route for consistency versus changing how CentOS interprets the time so all servers are the same.
> 

rdate -s <ntp.clock.of.choice>  e.g.   rdate -s clock.psu.edu

hwclock --systohc

Barry
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