[Date Prev][Date Next] [Thread Prev][Thread Next] [Date Index] [Thread Index]

Re: Changing HW clock to GMT?

Tim Thomson <tim.thomson@usa.net> writes:

> Hi,
> I want to set my hardware clock to GMT. I answered no in the question
> when setting up my system, so my HW clock would be local time. I now want
> to set it to GMT so I don't have to change it when daylight savings kicks
> in.

Look in /etc/init.d/boot.  There should be a line setting the variable 
GMT which is later used in a call to clock.  Just set that variable to 
"-u" instead of "".

Be certain to do a 'clock -u -w' before you shut your system down!
(immediately after you make this change to /etc/init.d/boot, perhaps?)

> Also, what tool syncs the hardware clock to the system time? I set my
> system time using netdate, in my ip-up and would like to set my HW clock
> to that and keep it synced. Using clock -w works, but is a pain.
> I must look at adjtimex again, rather than just using netdate.

clock -w is a pain?  (and, if your hardware clock is now in universal
time, you should use "clock -u -w")  Why can't you just put a "clock
-u -w" statement in your ip-up script right after the call to netdate?

Alternatively, I suppose that you could synchronize your hardware
clock to your software clock by adding a "clock -u -w" statement to
/etc/init.d/halt, preferably somewhere near the beginning.  That way,
your hardware clock would be written each time your machine rebooted
or was shut down - since the value in the hardware clock is usually
used only at boot time, this would seem to be enough.  I'd still put
the clock statement in the ip-up script too, though, to keep the
hardware clock synched in case of unexpected power outages.

TO UNSUBSCRIBE FROM THIS MAILING LIST: e-mail the word "unsubscribe" to
debian-user-request@lists.debian.org . 
Trouble?  e-mail to templin@bucknell.edu .

Reply to: