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From:	Philippe <jwphubert AT gmail DOT com>
Subject:	Re: 1.5.25: bug in touch statement
Date:	Sun, 15 May 2011 12:09:01 +0000 (UTC)
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Toby Allsopp <Toby.Allsopp <at> navman.co.nz> writes:

> 
> On Mon, Mar 28 2011, andre wrote:
> 
> > Hi,
> >
> > I can't do on cygwin 1.5.25 : 
> > $ touch -t 201103270200 file 
> > touch: format de date invalide `201103270200' 
> >
> > nor this equivalent : $touch -t 03270200 file
> >
> > It's very surprising , but ... 
> > If I change 27 for 28 it's OK - idem if i change 2011 by 2010... 
> 
> I would guess this has something to do with the transition to daylight
> saving time, which happened at 0200 on 2011-03-27.  This means that the
> time you are specifying didn't ever exist (in your local time zone)
> because 0200 became 0300.
> 
> Perhaps you can get what you want by specifying the time in UTC?
> 
> Regards,
> Toby.
> 
> 
I've found an interesting behaviour with this command on my Windows 7 64bits 
system.  It seems that there is a bug, or the we should change the 
documentation... But I can get around with the following date/time format:

MMddhhmmyy

where

MM: Month (01-12)
dd: day (01-31)
hh: hours (00-23)
mm: minutes (00-59)
yy: 2 digit year

yy is interesting.  00 to 37 yields 2000 to 2037.  70 to 99 yields 1970 to 
1999.  38 to 69 leaves the date unchanged, even for new correct time, day or 
month.

hh has another twist.  It will change time an hour MORE than what specified on 
the command line.  If you want the file date to be 9AM, you enter 08.  Another 
twist, if you specify 1231235511, the file date will be 2012 dec 31, 00h55, an 
hour later than the one specified.

Philippe
  





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