Re: set clock to GMT?

[(Ted Harding) <Ted.Harding@nessie.mcc.ac.uk>]

On 27-Aug-98 Rafael Cordones Marcos wrote:
> By the way, (for anybody listening) when I live my PC on for several
> days I have found that the hardware clock and th system time differ in
> HOURS. Is that OK? Should I use cron to update the hardware clock
> every now and then?

Several hours is not good. Something is not working as it should.
Seconds, yes; minutes out after a few days, OK.

Anyway, something needs to be reset: hardware clock or system clock or
both.

1. clock -u -r     will tell you what the absolute (UT/GMT) CMOS clock
                   is at the time

2. clock -r        will tell you what the same time is, in your Timezone

3. date            will tell you what the system date & time are, in your
                   Timezone

Compare the above with the best info you can get about what the time
really is.

4. read "man date"

5. date -s datestring      will set the SYSTEM clock to what you specify
                   in your Timezone

6. clock -u -w     will set the CMOS clock to UT/GMT corresponding to your
                   system time, allowing for Timezone

7. clock -w        will set the CMOS clock to the same as your local time
                   (system time, not allowing for Timezone; if your
                   Timezone has an offset, then when system time is
                   re-read from the CMOS it will be wrong relative to
                   local time)

Cheers,
Ted.

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E-Mail: (Ted Harding) <Ted.Harding@nessie.mcc.ac.uk>
Date: 28-Aug-98                                       Time: 20:15:20
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