[Rd] What version is sh?

Latchezar Dimitrov ldimitro at wfubmc.edu
Tue Dec 30 03:23:59 MET 2003

man sh says it's ash


> -----Original Message-----
> From: Duncan Murdoch [mailto:dmurdoch at pair.com] 
> Sent: Monday, December 29, 2003 7:06 PM
> To: r-devel at stat.math.ethz.ch
> Subject: Re: [Rd] What version is sh?
> On Mon, 29 Dec 2003 14:40:45 -0500, I wrote:
> >I'm trying to write an automatic check of the toolset 
> installation for 
> >R.  It'll get all the tools to print their version numbers, and 
> >complain if they aren't acceptable ones.
> >
> >However, I can't see how to get sh to print version information.  Is 
> >there some way to do it?
> >
> >The sh I'm worried about is the one that comes with Cygwin, if there 
> >isn't a standard approach.
> Several people suggested the GNU standard "--version" command 
> line option, which works for most of the Cygwin utilities, 
> but not this one.  Dirk Eddelbeuttel said
> >I'd suspect that it is one of the small shells which e.g. 
> Debian calls 
> >them ash and dash; these are used on boot floppies and the 
> like where 
> >space is at a premium.  As a consequence, they may not support all 
> >full-blown command-line options. So to test the shell, you 
> may need to 
> >run a small shell script containing the features you want to 
> make use 
> >of later.
> I think it must be one of those.  The executable is about 1/8 
> the size of the bash executable.
> Duncan Murdoch
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