Re: [Rd] Unix-like touch to update modification timestamp of file?

2008-02-28 Thread Nicholas Lewin-Koh
Wow, this has to win the prize for some of the most obscure
documentation ever.
Kudos on your M$-archaeology.
Nicholas

Message: 9
Date: Wed, 27 Feb 2008 15:23:51 -0500
From: Gabor Grothendieck [EMAIL PROTECTED]
Subject: Re: [Rd] Unix-like touch to update modification timestamp of
file?
To: Henrik Bengtsson [EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]
Message-ID:
[EMAIL PROTECTED]
Content-Type: text/plain; charset=ISO-8859-1

On Wed, Feb 27, 2008 at 1:27 PM, Henrik Bengtsson [EMAIL PROTECTED]
wrote:
 On Wed, Feb 27, 2008 at 8:24 AM, Gabor Grothendieck
 [EMAIL PROTECTED] 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

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Re: [Rd] Unix-like touch to update modification timestamp of file?

2008-02-27 Thread Earl F. Glynn
Henrik Bengtsson [EMAIL PROTECTED] wrote in message 
news:[EMAIL PROTECTED]...


 is it possible to update the modification time stamp of a file using R
 (on file systems supporting it)?

For a Windows PC, if you have RTools in your path (from 
http://www.murdoch-sutherland.com/Rtools/installer.html), then you should be 
able to use the touch that's in the RTools\bin directory:

system(touch sample.dat)

efg

Earl F. Glynn
Bioinformatics
Stowers Institute for Medical Research

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Re: [Rd] Unix-like touch to update modification timestamp of file?

2008-02-27 Thread Gabor Grothendieck
If you only need Windows then this will do it even without RTools:

shell(copy /b /v myfile +,,nul)



On Wed, Feb 27, 2008 at 11:12 AM, Earl F. Glynn
[EMAIL PROTECTED] wrote:
 Henrik Bengtsson [EMAIL PROTECTED] wrote in message
 news:[EMAIL PROTECTED]...


  is it possible to update the modification time stamp of a file using R
  (on file systems supporting it)?

 For a Windows PC, if you have RTools in your path (from
 http://www.murdoch-sutherland.com/Rtools/installer.html), then you should be
 able to use the touch that's in the RTools\bin directory:

 system(touch sample.dat)

 efg

 Earl F. Glynn
 Bioinformatics
 Stowers Institute for Medical Research


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 R-devel@r-project.org mailing list
 https://stat.ethz.ch/mailman/listinfo/r-devel


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Re: [Rd] Unix-like touch to update modification timestamp of file?

2008-02-27 Thread Henrik Bengtsson
On Wed, Feb 27, 2008 at 8:24 AM, Gabor Grothendieck
[EMAIL PROTECTED] 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?

Thanks to both you.

Henrik






  On Wed, Feb 27, 2008 at 11:12 AM, Earl F. Glynn
  [EMAIL PROTECTED] wrote:
   Henrik Bengtsson [EMAIL PROTECTED] wrote in message
   news:[EMAIL PROTECTED]...
  
  
is it possible to update the modification time stamp of a file using R
(on file systems supporting it)?
  
   For a Windows PC, if you have RTools in your path (from
   http://www.murdoch-sutherland.com/Rtools/installer.html), then you should 
 be
   able to use the touch that's in the RTools\bin directory:
  
   system(touch sample.dat)
  
   efg
  
   Earl F. Glynn
   Bioinformatics
   Stowers Institute for Medical Research
  
  
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