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Date: Wed, 31 Aug 2016 16:48:09 +0200
From: Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: Different representations of time in ls -l and date(1)
Message-ID: <20160831144809.GB22389@calimero.vinschen.de>
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On Aug 31 09:36, Eric Blake wrote:
> On 08/31/2016 08:04 AM, Frank Farance wrote:
> > On 2016-08-31 08:09, Markus Hoenicka wrote:
> >> At 2016-08-31 13:41, Schwarz, Konrad was heard to say:
> >>> Sorry for the previous incomplete mail.
> >>>
> >>> So my problem is that date(1) outputs AM/PM style dates, whereas ls -l
> >>> uses 24 hour times.
> >>>
> >>> $ ls -l rtos_benchmark.lst
> >>> -rwxr-xr-x+ 1 mchn1350 Domain Users 263 Aug 31 13:14 rtos_benchmark.l=
st*
> >>> $ date
> >>> Wed, Aug 31, 2016  1:39:35 PM
> >>> $ echo $LC_TIME
> >>>
> >>> $ echo $LANG
> >>> en_US.UTF-8
> >>>
> >>> Shouldn't they be using the same format?
>=20
> Not necessarily.  ls hardcodes its default representation for files
> younger than 6 months to:
>=20
> "%b %e %H:%M"
>=20
> while date hardcodes its default representation to:
>=20
> nl_langinfo(_DATE_FMT)
>=20
> >=20
> > Furthermore, I'd say that the default output of "date" should look like
> > the Linux one, which is the way it has looked on UNIX for about 40 year=
s:
> >=20
> > Linux: Wed Aug 31 08:56:10 EDT 2016
> > Cygwin: Wed, Aug 31, 2016 08:54:49
> >=20
> > In other words, on Cygwin: get rid of the commas, put back the timezone.
>=20
> Sounds like the bug is in cygwin1.dll's nl_langinfo() function for
> returning a date format with spurious commas.

Windows LOCALE_SLONGDATE contains these commas in the en-US locale.

Outside of the "C"/"POSIX" locale the expectation of identical date/time
strings on different platforms is not feasible.


Corinna

--=20
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Maintainer                 cygwin AT cygwin DOT com
Red Hat

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