google comes up trumps again,
http://www.redhat.com/swr/i386/xntp3-5.93-14.i386_dl.html
IWD
-----Original Message-----
From: Mark Hannah [mailto:[EMAIL PROTECTED]]
Sent: 18 April 2001 12:37
To: Paul Millar; scottish
Subject: RE: [scottish] Linux time.
Am I doing something silly here?
I am going to "www.redhat.com" and "serach the marketplace: Software".
I then do a search on "ntp" and it comes back with "no resultd found".
What am I doing wrong?
Thanks,
Mark.
>===== Original Message From Paul Millar <[EMAIL PROTECTED]> =====
>On Wed, 18 Apr 2001, Mark Hannah wrote:
>> Thanks to everyone for replying...this was the exact problem...dual boot
with
>> windows. I have updates the hardware clock and things are perfect now.
>>
>> I don't have an "ntpdate" command though. Is it simply a matter of
>> downloading
>> this prog and running it? Or does it need any other config?
>
>ntpdate is part of the ntp package, which tries to keep your clock
>synchronised with various time servers dotted around the Internet, it
>takes into account latency in packets and jitter in the time-servers to
>get a best-guess of the correct time.
>
>ntpdate does a one-shot request from a particular time-server and updates
>the system time accordingly. ntpd is the daemon that maintains the system
>time by periodically (typ. 2-3 minutes) contacts a selection of
>time-servers to make sure everything's ok.
>
>To get it, either get hold of the ntp package (ntp-4.0.99k-15.i386.rpm,
>for RH) or compile the source (which is painless).
>
>Cheers,
>
>Paul.
>
>> >===== Original Message From Paul Millar <[EMAIL PROTECTED]> =====
>> >Hi Mark,
>> >
>> >On Wed, 18 Apr 2001, Mark Hannah wrote:
>> >> Can anyone help me with a problem that has been driving me crazy for
the
>> last
>> >> few weeks?
>> >>
>> >> Since we switched to BST, my linux time has somehow got an hour ahead.
>> >> I can chage the time by doing :-
>> >>
>> >> date --set='-1 hour'
>> >>
>> >> but, on the next re-boot the time reverts back to being an hour fast.
>> >> Can anyone tell me what is going on?
>> >
>> >Is this a dual boot with a windows machine, by an chance ?
>> >
>> >Ok, There are two distinct clocks on a PC a `hardware' clock (works when
>> >the power is off, but tends to drift badly) and a `system' clock
>> >(maintained by Linux in software, generally a lot better but not
perfect).
>> >
>> >On power-up (in /etc/rc.d/rc.sysinit for the curious), Linux reads the
>> >time from the hardware clock. There are two conventions for the hardware
>> >clock: storing UTC or local time. If you store UTC in your hardware
clock,
>> >then you don't have to alter the clock when entering BST, if you store
>> >local time then you do.
>> >
>> >To alter the hardware clock, use the hwclock command, e.g.:
>> > hwclock (look at current time in hardware clock)
>> > hwclock --systohc (copies system clock to hardware clock,
assuming
>> > hardware clock stores local time)
>> > hwclock --systohc --utc (as above but hardware clock stores UTC)
>> >
>> >Unfortunately, windows assumes that the hardware clock stores the local
>> >time and will adjust the clock accordingly when entering BST, hence the
>> >problem. You can either reset the clock to UTC and live with windows
>> >having the wrong idea of time, or update Linux to mirror windows'
>> >behaviour. If you have a RedHat machine, look at the
/etc/sysconfig/clock
>> >file and change UTC=true to UTC=false.
>> >
>> >HTH
>> >
>> >Paul.
>> >
>> >PS. If you are going to use ntp (which is very good) make sure you've
>> >updated your copy. There's a vulnerability that can lead to a remote
root
>> >compromise. Updates are available from RedHat (and I assume SuSE,
>> >mandrake, ...)
>> >
>>
>---------------------------------------------------------------------------
--
>> -
>> >Paul Millar yo-yo, n. :
>> >Particle Physics Theory Group Something that is
occasionally
>> >Department of Physics and Astronomy up but normally down.
>> >University of Glasgow, (see also Computer)
>> >Glasgow G12 8QQ,
>> [EMAIL PROTECTED]
>> >Scotland +44 (0)141 330
4717
>>
>---------------------------------------------------------------------------
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>
>---------------------------------------------------------------------------
--
-
>Paul Millar yo-yo, n. :
>Particle Physics Theory Group Something that is occasionally
>Department of Physics and Astronomy up but normally down.
>University of Glasgow, (see also Computer)
>Glasgow G12 8QQ,
[EMAIL PROTECTED]
>Scotland +44 (0)141 330 4717
>---------------------------------------------------------------------------
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>
>
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