On: Mon, 26 Oct 1998 00:27:04 +1100 Hamish Moffatt writes:
>
> On Sun, Oct 25, 1998 at 10:22:13AM +0100, [EMAIL PROTECTED] wrote:
>> My system hasn't recognized daylight saving either, I don't think
>> it has to do with the bios... is there a way to automate these
>> changes?
>
> Linux will only change the system clock if it is actually running at
> the time of the change over (which was 2am this morning here).
> Also, it will not write the system clock out to the hardware clock
> (set hwclock -w to do that).
Linux will not change the clock at all (contrary to Windows). All
Linux does is to interpret the time in a different way.
Assuming that your CMOS clock is set to GMT. Then here in Middle
Europe Linux will add 1 hour to the time in winter month and 2 hours
while daylight saving time is active *while* displaying it with date,
ls, or one of the other commands displaying the time. This is done by
the libc functions for fetching and formatting the time, e.g.,
localtime(3). Remember, the time in Unix is always stored in seconds
since Epoch and this time is monotonly ascending.
If the CMOS clock is set to local time Linux won't adapt to the change
between daylight saving and normal time IIRC.
Torsten
