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Topic: ntp time server select ?, how do I configure the time server?

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bjhbjh

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Posts: 21
Joined: Jan. 2008

Posted: Feb. 28 2008,01:49

Running the latest DSL. Have found how to set the time via an ntp server and it all works but don't see how I can set which time server to use, or even know which one it uses by default. Can I point it to the time server of my choice some how?

Thanks,

Brian H.

roberts

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Posts: 4983
Joined: Oct. 2003

Posted: Feb. 28 2008,05:48

Built into DSL is a script to set time using NIST see: http://tf.nist.gov/service/its.htm

Looking at that script /usr/local/bin/gettime.lua you will see that it uses a default its of time-nw.nist.gov

The script also accepts a runtime paramter such that you can overridde the default with an internet time server near you.

sudo gettime.lua your_its_server_here

If your internet connection is up and available upon boot then add the command to your /opt/bootlocal.sh. sudo not needed as bootlocal.sh is run as root upon booting.

Juanito

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Posts: 1601
Joined: Sep. 2005

Posted: Feb. 28 2008,16:39

Would it be possible to modify the gettime script to accept a user input of the form "GMT+-n"?

The reason I ask is that (as far as I know) my time zone is not one of the choices available in dsl and, since my time stays the same all year (i.e. there is no daylight savings adjustment), I was thinking it might be possible to say something like:

$ sudo gettime.lua GMT+4

and have my machine's clock adjusted correctly

curaga

Group: Members
Posts: 2163
Joined: Feb. 2007

Posted: Feb. 28 2008,16:53

NIST gives the UTC time. Doesn't DSL recognize the GMT+? timezones?

I mean, if you have the clock in UTC, linux can set the local time according to that.

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Juanito

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Posts: 1601
Joined: Sep. 2005

Posted: Feb. 28 2008,17:16

Quote

Doesn't DSL recognize the GMT+? timezones?

- no

Quote

I mean, if you have the clock in UTC, linux can set the local time according to that

- I'm not sure if I caught the right meaning here, but if the clock is in UTC, you need to have the means to pass a time offset (i.e. tell the system where you are). At the moment, if I enter nothing and then run gettime.lua, the clock is set to GMT-4 (dsl default of US east coast I guess)

20 replies since Feb. 28 2008,01:49

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