[R] capturing output from Win 98 shell
Prof Brian Ripley
ripley at stats.ox.ac.uk
Tue Aug 12 17:18:27 CEST 2003
On 12 Aug 2003, Peter Dalgaard BSA wrote:
> "Simon Fear" <Simon.Fear at synequanon.com> writes:
> > > system("COMMAND.COM /c dir /b", intern=T, show.output.on.console=T)
> > character(0)
> > > print(system("COMMAND.COM /c dir /b", intern=F,
> > show.output.on.console=T))
> >  0
> > In both cases here a DOS window opens and lists a couple of hundred
> > files,
> > before giving the above output.
> Does it help if you drop the "COMMAND.COM /c" bit??
No, but as `dir' is an internal command, it does help to use shell() and
not system(). It is shell() that is the equivalent of S-PLUS's dos()
Not that R has dir() and list.files(), though.
Brian D. Ripley, ripley at stats.ox.ac.uk
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel: +44 1865 272861 (self)
1 South Parks Road, +44 1865 272866 (PA)
Oxford OX1 3TG, UK Fax: +44 1865 272595
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