MLUG: Re: [MLUG] daylight savings changes
Re: [MLUG] daylight savings changes
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On Tue, 12 Sep 2006, Phillip Kelchen wrote:

On Tuesday 12 September 2006 09:58, Mike Miller wrote:
Note that the rules change in 2007:

http://webexhibits.org/daylightsaving/b.html

Will Linux programs handle this smoothly?

It all depends on the program, I think. I know that Gentoo has an /etc/localtime that uses definitions of the time zone that you are in- and I got an update to "CST6CDT" that supposedly had the new 2007+ mappings in them. Programs all *should* use the /etc/localtime to tell the time from and with the right definition in /etc/localtime, it should go smoothly with just that one little update to change the whole system.

I was hoping it would be that simple. I wonder about Solaris 8. I guess if it doesn't change on its own, I can change it by hand. Ahh...I guess this is the answer:


http://sunsolve.sun.com/search/document.do?assetkey=1-26-102178-1


It is programs that carry their own tables that becomes a problem. And then the programs have to NOT be updated/patched between now and the spring. I foresee this being a much worse problem with Windows programs with the tables hard-coded to prevent people from doing things like reset the system clock to use a shareware/trial past its expiration date. Those programs would have to be manually patched and redistributed to use the new time definitions. That would be more a vendor issue...and yet another reason to not use proprietary stuff if you can help it as you can't fix it.

Right. A real hassle for the user, but an opportunity for the developer to make an extra buck, or extra hundreds of bucks.


Mike

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