Mailinglist Archive: opensuse (3378 mails)

[Gerhard den Hollander <gerhard@xxxxxxxxxxxx>]

* Berge, Harry ten <berge@xxxxxxx> (Wed, Apr 10, 2002 at 02:11:39PM +0200)
> yes, your correct. This is what I want to, but with our settings the 2 times
> are exactly the same. What is the setting of your TZ env. variable?

% grep TIMEZONE /etc/rc.config
TIMEZONE="Europe/Amsterdam"
% grep GMT /etc/rc.config
GMT="--localtime"

>> -----Original Message-----
>> From:	Gerhard den Hollander [SMTP:gerhard@xxxxxxxxxxxx]
>> Sent:	Wednesday, April 10, 2002 1:19 PM
>> To:	Berge, Harry ten
>> Cc:	SuSE general (E-mail)
>> Subject:	Re: [SLE] timezone question
>> 
>> * Berge, Harry ten <berge@xxxxxxx> (Wed, Apr 10, 2002 at 11:25:56AM +0200)
>>> Hi,
>>> 
>>> We have an application which determines the timezone and if the daylight
>>> saving is active. To do this, the struct tm is used, and the functions
>>> localtime() and gmtime(). The problem is the application correctly says
>> it
>>> is 'daylight saving active' for Solaris/Unix/WinNT, but for Linux not.
>>> 
>>> The system settings are:
>>> 
>>> GMT="--localtime"
>>> TIMEZONE="Europe/Amsterdam"
>>> 
>>> Has anyone an idea what whe are doing wrong?
>> 
>> #include <time.h>
>> #include <stdio.h>
>> 
>> 
>> 
>> main()
>> {
>>    struct tm * tm;
>>    time_t       t;
>>    t = time(NULL);
>>    tm = gmtime(&t);
>>    printf("GMT: %s",asctime(tm));
>>    printf("GMT: %d\n\n",tm->tm_isdst);
>>    tm = localtime(&t);
>>    printf("LOC: %s",asctime(tm));
>>    printf("LOC: %d\n\n",tm->tm_isdst);
>> }
>> 
>> 
>> gives
>> GMT: Wed Apr 10 11:10:51 2002
>> GMT: 0
>> 
>> LOC: Wed Apr 10 13:10:51 2002
>> LOC: 1
>> 
>> which is exactly what I would expect ....
>> or do you want asctime to say ``daylight savings time'' at the end ?
>> 
>> try strftime ...
>> 
Kind regards,
 --
Gerhard den Hollander                           Phone :+31-10.280.1515
Global IT Support manager                       Direct:+31-10.280.1539 
Jason Geosystems BV                             Fax   :+31-10.280.1511 
              (When calling please note: we are in GMT+1)
gdenhollander@xxxxxxxxxxxx                          POBox 1573
visit us at http://www.jasongeo.com                 3000 BN Rotterdam  
JASON.......#1 in Reservoir Characterization        The Netherlands

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