Linux script on Windows to chjange Date and Time

[Paul Ward]

Hi All,

I need to find a way of syncing the date on 4 linux pcs and 2 windows
pc's using eiter a linux script or windows :(
I would rather not use a samba share and get dos to run a if exist statment.

Does anyone have any suggestions?

Anyone know if cygwin allows a Linux box to ssh using a rsa key and
run commands?

????

[Brad Bonkoski]

Why not the the NTP protocol?
Set up one of your Linux machines as the serve which you can sync to 
some global time server, and then have all your other machines sync to it.
for the windows machines there are NTP clients as well.
-B

Paul Ward wrote:
> Hi All,
>
> I need to find a way of syncing the date on 4 linux pcs and 2 windows
> pc's using eiter a linux script or windows :(
> I would rather not use a samba share and get dos to run a if exist 
> statment.
>
> Does anyone have any suggestions?
>
> Anyone know if cygwin allows a Linux box to ssh using a rsa key and
> run commands?
>
> ????

[Miles Brennan]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Paul Ward wrote:
> Hi All,
>
> I need to find a way of syncing the date on 4 linux pcs and 2 windows
> pc's using eiter a linux script or windows :(
> I would rather not use a samba share and get dos to run a if exist
> statment.
>
> Does anyone have any suggestions?
>
> Anyone know if cygwin allows a Linux box to ssh using a rsa key and
> run commands?
>
> ????

Paul,

Set up one of your Linux systems with NTP and get all the other machines
to sync with it.

http://www.brennan.id.au/09-Network_Time_Protocol.html

Cheers,
Miles.
> -----BEGIN PGP SIGNATURE-----
> Version: GnuPG v1.4.2.2 (MingW32)
>
> iD8DBQFFHRrScSPa0xQu/fARAqasAJ0XhrzBpS2iadW768I8DmyV0gpO5wCfZtTw
> 19Zx8E1GHuPeh3WDx+jTdhE=
> =thow
> -----END PGP SIGNATURE-----

[Alessandro Brezzi]

Hi Paul,

2006/9/29, Paul Ward :
> Hi All,
>
> I need to find a way of syncing the date on 4 linux pcs and 2 windows
> pc's using eiter a linux script or windows :(
> I would rather not use a samba share and get dos to run a if exist statment.
>
> Does anyone have any suggestions?
>
> Anyone know if cygwin allows a Linux box to ssh using a rsa key and
> run commands?
>
> ????

My be the simple and faster way is to elect one or two of your Linux
box to run ntpd and to sync time from the internet. Then in the M$Win
box uset the NET TIME command to point to the Linux box.
HTH

Alessandro Brezzi

[Paul Ward]

I thought of that but apparently we need the date chagne to take
effect almost immediatly, well within 30 mins.

If we set the date of our test network fwd 1 year the ntp would take
several hours or probably more to catch up.

On 29/09/06, Alessandro Brezzi  wrote:
> Hi Paul,
>
> 2006/9/29, Paul Ward :
> > Hi All,
> >
> > I need to find a way of syncing the date on 4 linux pcs and 2 windows
> > pc's using eiter a linux script or windows :(
> > I would rather not use a samba share and get dos to run a if exist statment.
> >
> > Does anyone have any suggestions?
> >
> > Anyone know if cygwin allows a Linux box to ssh using a rsa key and
> > run commands?
> >
> > ????
>
> My be the simple and faster way is to elect one or two of your Linux
> box to run ntpd and to sync time from the internet. Then in the M$Win
> box uset the NET TIME command to point to the Linux box.
> HTH
>
> Alessandro Brezzi
>
> --
> fedora-list mailing list
> [e-mail]
> To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list

[Brad Bonkoski]

Paul Ward wrote:
> I thought of that but apparently we need the date chagne to take
> effect almost immediatly, well within 30 mins.
>
> If we set the date of our test network fwd 1 year the ntp would take
> several hours or probably more to catch up.

It would take a LOT longer then that to catch up ;-)
there is also a ntpdate utility on Linux at least to do an automatic sync.
Not sure on the cygwin, but it may be worth a shot...then you could 
cron/batch an ntpdate like command to run every X minutes.
> On 29/09/06, Alessandro Brezzi  wrote:
> > Hi Paul,
> >
> > 2006/9/29, Paul Ward :
> > > Hi All,
> > >
> > > I need to find a way of syncing the date on 4 linux pcs and 2 windows
> > > pc's using eiter a linux script or windows :(
> > > I would rather not use a samba share and get dos to run a if exist
> >
> > statment.
> > > Does anyone have any suggestions?
> > >
> > > Anyone know if cygwin allows a Linux box to ssh using a rsa key and
> > > run commands?
> > >
> > > ????
> >
> > My be the simple and faster way is to elect one or two of your Linux
> > box to run ntpd and to sync time from the internet. Then in the M$Win
> > box uset the NET TIME command to point to the Linux box.
> > HTH
> >
> > Alessandro Brezzi
> >
> > -- 
> > fedora-list mailing list
> > [e-mail]
> > To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list

[Tom Diehl]

On Fri, 29 Sep 2006, Paul Ward wrote:
> I thought of that but apparently we need the date chagne to take
> effect almost immediatly, well within 30 mins.
>
> If we set the date of our test network fwd 1 year the ntp would take
> several hours or probably more to catch up.

Ntp will give up trying to sync if the clocks are off by more than 5 minutes.

What are you really trying to do??

Regards,

[Paul Ward]

We have a test environment using an oracle database on redhat. During
testing we need to wind the clock forward and backwards to ensure that
certain actions are carried out correctly on the dates. It is also
connected to several citrix servers which also have to have the same
time and dates else the applications fail to run.

Currently we are having to do each machine by hand but wish to find a
way to automate this action as it is very repetitive.

On 29/09/06, Tom Diehl  wrote:
> On Fri, 29 Sep 2006, Paul Ward wrote:
> > I thought of that but apparently we need the date chagne to take
> > effect almost immediatly, well within 30 mins.
> >
> > If we set the date of our test network fwd 1 year the ntp would take
> > several hours or probably more to catch up.
>
> Ntp will give up trying to sync if the clocks are off by more than 5 minutes.
>
> What are you really trying to do??
>
> Regards,
>
> --
> Tom Diehl               [e-mail]             Spamtrap address [e-mail]
>
> --
> fedora-list mailing list
> [e-mail]
> To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list

[Tom Diehl]

On Fri, 29 Sep 2006, Paul Ward wrote:
> We have a test environment using an oracle database on redhat. During
> testing we need to wind the clock forward and backwards to ensure that
> certain actions are carried out correctly on the dates. It is also
> connected to several citrix servers which also have to have the same
> time and dates else the applications fail to run.
>
> Currently we are having to do each machine by hand but wish to find a
> way to automate this action as it is very repetitive.

AAH!! That makes more sense. First thing that pops into my head is write a
script that runs the date command from one of the Red Hat machines. Then use
ssh to run the command on the rest of the Red Hat boxes.

On the windoze boxes use a login script that syncs the time using the net
time command. Even better install cygwin on the windoze boxes and use the
same script that you use to set the clocks on the Red Hat boxes to set the
clock on the windoze boxes.

If you do it right you should be able to run the script on one of the boxes
and have all of the clocks get set to the time you desire.

All of this is of course totally untested and just random thoughts coming
out of my brain.

HTH

Regards,

[Les Mikesell]

On Fri, 2006-09-29 at 10:45 -0400, Tom Diehl wrote:
> > I thought of that but apparently we need the date chagne to take
> > effect almost immediatly, well within 30 mins.
> >
> > If we set the date of our test network fwd 1 year the ntp would take
> > several hours or probably more to catch up.
>
> Ntp will give up trying to sync if the clocks are off by more than 5 minutes.
>
> What are you really trying to do??

The init script that starts ntpd runs ntpdate first for the initial
setting at bootup.  After other programs (especially cron) are started
you normally want to adjust less than a second at a time so you
don't miss any timer boundaries.

[Fernando Lozano]

Alessandro,
> My be the simple and faster way is to elect one or two of your Linux
> box to run ntpd and to sync time from the internet. Then in the M$Win
> box uset the NET TIME command to point to the Linux box.

NET TIME needs the user to confirm the change, keying "y". Do you know
any means of swtiching this confirmation off, so I can use NET TIME from
windows login scripts?

[]s, Fernando Lozano

[Tom Diehl]

On Fri, 29 Sep 2006, Fernando Lozano wrote:
> Alessandro,
> > My be the simple and faster way is to elect one or two of your Linux
> > box to run ntpd and to sync time from the internet. Then in the M$Win
> > box uset the NET TIME command to point to the Linux box.
>
> NET TIME needs the user to confirm the change, keying "y". Do you know
> any means of swtiching this confirmation off, so I can use NET TIME from
> windows login scripts?

net time \foggy /set /y

Season to taste. You should really ask this on a windoze list though.

Regards,

[Alessandro Brezzi]

Hi Fernando,

2006/9/29, Tom Diehl :
> On Fri, 29 Sep 2006, Fernando Lozano wrote:
> > Alessandro,
> > > My be the simple and faster way is to elect one or two of your Linux
> > > box to run ntpd and to sync time from the internet. Then in the M$Win
> > > box uset the NET TIME command to point to the Linux box.
> >
> > NET TIME needs the user to confirm the change, keying "y". Do you know
> > any means of swtiching this confirmation off, so I can use NET TIME from
> > windows login scripts?
>
> net time \foggy /set /y
>
> Season to taste. You should really ask this on a windoze list though.
>
> Regards,

Tom pointed out the correct form; I'm not a M$Win guru at all and I
recalled back in Win2000 no question was posed. Sorry for the delay.

[Fernando Lozano]

Hi Tom,
> > NET TIME needs the user to confirm the change, keying "y". Do you know
> > any means of swtiching this confirmation off, so I can use NET TIME from
> > windows login scripts?
>
> net time \foggy /set /y
> Season to taste. You should really ask this on a windoze list though.

The "/y" switch is undocumented, FYI.

And, if you use Fedora to host a samba server for windows clients, I see
no problem asking questions about login scripts samba will provide to
those clients. After all, this is sysadmin job also.

[]s, Fernando Lozano

[Michael Martinez]

FYI (slight off topic but not entirely):

When Windows (any version) boots, it uses the hardware clock to set its 
time and it *always* believes this clock to be your local time.

So be careful with your dual boot computers. Linux may set your hardware 
clock to UTC, which will confuse Windows.

Regards,

Michael Martinez
Engineering Manager
Tech Computer Center (TCC), Speare Room 128
New Mexico Tech, 801 Leroy Place, Socorro, NM 87801
[phone] [e-mail]
http://www.nmt.edu/tcc/
--
http://sftplogging.sourceforge.net
http://atftplocalnet.sourceforge.net/

Fernando Lozano wrote:
> Hi Tom,
> > > NET TIME needs the user to confirm the change, keying "y". Do you know
> > > any means of swtiching this confirmation off, so I can use NET TIME from
> > > windows login scripts?
> >
> > net time \foggy /set /y
> > Season to taste. You should really ask this on a windoze list though.
>
> The "/y" switch is undocumented, FYI.
>
> And, if you use Fedora to host a samba server for windows clients, I see
> no problem asking questions about login scripts samba will provide to
> those clients. After all, this is sysadmin job also.
>
> []s, Fernando Lozano