utility creating a dst cache

[Mariano Absatz]

Hi Chuck,

I've never used the tz database directly (I only keep it up to date and let 
the time be correct :-)

However, AFAIK, the tz package is a loosely coupled set of utilities and 
libraries and it would be really hard to know if, for instance, the tz part 
of the libc changed...

WRT the zoneinfo files, I don't think they have a serial number or the 
like, maybe you could cache an MD5 signature of the file together with your 
dst cache and check it periodically.

HTH

El 1 Aug 2003 a las 12:43, Chuck Soper escribió:

> Hello,
> I'm writing a utility that uses the tz database. One of the features 
> is to quickly (via a cache saved to disk) display daylight saving 
> times for a given year and tz location. If the tz package is updated 
> then I will need to re-create my dst cache.
> 
> Is there a way to programmatically determine if the tz package has 
> been updated since the last time I ran my utility? Is there a way to 
> determine if a specific zoneinfo file has been updated?
> Thanks, Chuck
> 


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Mariano Absatz - El Baby
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