From ggrothendieck at gmail.com  Wed Feb 27 21:23:51 2008
From: ggrothendieck at gmail.com (Gabor Grothendieck)
Date: Wed, 27 Feb 2008 15:23:51 -0500
Subject: [Rd] Unix-like touch to update modification timestamp of file?
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References: <59d7961d0802262154r2e049998yf5ce8ea08ab5d249@mail.gmail.com>
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	<59d7961d0802271027s14b6ee1av669d5b2f788fcc20@mail.gmail.com>
Message-ID: <971536df0802271223s13462925w2b3fd5d7f90805b@mail.gmail.com>

On Wed, Feb 27, 2008 at 1:27 PM, Henrik Bengtsson <hb at stat.berkeley.edu> wrote:
> On Wed, Feb 27, 2008 at 8:24 AM, Gabor Grothendieck
> <ggrothendieck at gmail.com> wrote:
> > If you only need Windows then this will do it even without RTools:
> >
> >  shell("copy /b /v myfile +,,>nul")
>
> Interesting.  Show I figured out that '+' is for "append", but how to
> interpret the two commas?
>

Commas generally have various undocumented effects in Windows batch
and sometimes Microsoft mentions one:
http://support.microsoft.com/kb/69581



[Rd] Unix-like touch to update modification timestamp of file?
Gabor Grothendieck