gharris999;585398 Wrote:
> I'm not really sure how hwclock determines if the hardware clock is set
> to local or to UTC. But if the time reported by hwclock appears to be
> UTC, then, yes, you should use %d rather than %l.
AFAIK, hwclock cannot not know by reading the clock device. It tries to
read /etc/adjtime to see if there is info about the hardware TZ. If
there is no info, it picks UTC. Have a look at man hwclock for the
authoritative information.
This is what my machine says at 7:51 PM local time. The hw clock is
indeed set to UTC:
Code:
--------------------
$ more /etc/adjtime ; sudo hwclock --debug --show
51.263680 1286531652 0.000000
1286531652
UTC
hwclock from util-linux-ng 2.17.2
Using /dev interface to clock.
Last drift adjustment done at 1286531652 seconds after 1969
Last calibration done at 1286531652 seconds after 1969
Hardware clock is on UTC time
Assuming hardware clock is kept in UTC time.
Waiting for clock tick...
...got clock tick
Time read from Hardware Clock: 2010/10/28 17:51:28
Hw clock time : 2010/10/28 17:51:28 = 1288288288 seconds since 1969
Thu 28 Oct 2010 07:51:28 PM CEST -1.021738 seconds
--------------------
You only need setting the hw clock to local time when using Windows (up
to XP, at least): it forces the clock to local time if it isn't.
Confusion ensues if you are dual-booting windows/linux.
--
epoch1970
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