Brad Shelton <[EMAIL PROTECTED]> responds:
>After you set the time, you need to write it to the hardware clock.
>Othwise it'll continue to get the wrong time from the hardware clock.
>
>To set the hardware clock, as root do clock -w.
Thanks, Brad, and others. I guess it goes to show how long
it's been since I've upgraded; my ancient Slackware setup
wrote to the hardware clock whenever I did a simple `date.'
I'd never heard of the `clock' or `hwclock' commands.
Another question occurs, though. In my previous setup, changes
to/from Daylight Savings Time were automatic. I assume knowledge
of these changes is in the Linux software, not the hardware
clock, but in any case, I never had to perform any administrative
tasks at that time of year. In fact, I could check with Linux
if I was in doubt if this was the time of changeover.
Since I bought this machine just before last fall's change from
DST, and I rarely reboot, I suspect SuSE 5.3 does NOT update the
hardware clock after the DST change, but the normal Linux date
routines know when the change occurs and adjust the soft clock,
and that's why I didn't know anything was amiss.
What do you all recommend now to cope with DST? Should a routine
be added somewhere to write to the hardware clock when a change
to/from DST occurs, say, as a twice-a-year cron task? If so,
does anyone have a favorite cron spec for USA DST?
I'm suspicious that my hardware clock is likely not very accurate,
given that it seemed to be off noticably in the short time I halted
my machine in my testing. What do you folks recommend as a source
of accurate time? Is your computer crystal clock pretty good?
Do you periodically dial up a standards bureau? Favorite suggestions?
Given all the capabilities of clock(8) and hwclock it's tempting
to go for some accuracy. My current /etc/adjtime is all zeros.
Thanks again,
Jim
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