GNU bug report logs - #7866
Problem with date +%s -d

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Message #17 received at 7866 <at> debbugs.gnu.org (full text, mbox):

From: "Arvizu, Bob (CONT)" <Bob.Arvizu <at> capitalone.com>
To: Gilles Espinasse <g.esp <at> free.fr>, "7866 <at> debbugs.gnu.org"
	<7866 <at> debbugs.gnu.org>
Cc: "Barrar, John" <john.barrar <at> capitalone.com>, "Sheth,
	Amit \(CONT\)" <Amit.Sheth <at> capitalone.com>
Subject: RE: bug#7866: Problem with date +%s -d 
Date: Wed, 19 Jan 2011 15:14:20 -0500

Thanks, Gilles!!

Daylight savings didn't occur to me!!  
That's great, because that means there's no bug!!

Thanks!!!!
-Bob

-----Original Message-----
From: Gilles Espinasse [mailto:g.esp <at> free.fr] 
Sent: Wednesday, January 19, 2011 3:09 PM
To: 7866 <at> debbugs.gnu.org; Arvizu, Bob (CONT)
Cc: Barrar, John; Sheth, Amit (CONT)
Subject: Re: bug#7866: Problem with date +%s -d 


----- Original Message ----- 
From: "Arvizu, Bob (CONT)" <Bob.Arvizu <at> capitalone.com>
To: <7866 <at> debbugs.gnu.org>
Cc: "Barrar, John" <john.barrar <at> capitalone.com>; "Sheth,Amit (CONT)"
<Amit.Sheth <at> capitalone.com>
Sent: Wednesday, January 19, 2011 7:51 PM
Subject: bug#7866: Problem with date +%s -d


> Folks,
>
> fyi ...
> I've discovered a problem with the "date +%s -d Date" command on
> Linux xxxxxx 2.6.9-89.0.23.ELsmp #1 SMP Fri Mar 5 17:56:21 EST 2010
>  i686 i686 i386 GNU/Linux
> and
> Linux yyyyyy 2.6.9-89.0.28.ELlargesmp #1 SMP Thu Jul 22 18:24:58 EDT 2010
> x86_64 x86_64 x86_64 GNU/Linux
>
> date +%s -d 20110313
> 1299992400
> date +%s -d 20110314
> 1300075200
> echo $(( 1300075200 - 1299992400 ))
> 82800
>
>
Thank for the report.
This is addressed in FAQ
http://www.gnu.org/software/coreutils/faq/coreutils-faq.html#The-date-command-is-not-working-right_002e

this should show the timezone names switching time the 13 March :
cd /usr/share/zoneinfo/posix && find ./ -type f -exec zdump -v {} \; | grep
'2011' | grep 'Mar 13'

Gilles
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