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MathGroup Archive 2000

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Re: shell commands in notebooks

  • To: mathgroup at smc.vnet.net
  • Subject: [mg22205] Re: shell commands in notebooks
  • From: "John M. Jowett" <John.Jowett at cern.ch>
  • Date: Fri, 18 Feb 2000 02:34:41 -0500 (EST)
  • Organization: CERN
  • References: <88dnnt$11q@smc.vnet.net> <88g6ie$4o1@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com


"P.J. Hinton" wrote:
>
> Neither the front end nor the kernel captures output (stdout or stderr)
> from executables invoked by the kernel.  As a result the output is not
> seen.  This is noted in _The Mathematica Book_ (Fourth Edition).  You can
>>>>>>>>>>>>>>>>>> snip <<<<<<<<<<<<<<<< 
> You can capture the output with a funciton like this.
> 
> RunCapture[cmd_String, arg__:""] :=
>   Module[
>     {outfil = Close[OpenTemporary[]], result, stmp},
>     Run[cmd, arg, ">", outfil];
>     stmp = OpenRead[outfil];
>     result = Read[outfil, Record, RecordSeparators -> {}];
>     Close[stmp]
>     DeleteFile[outfil];
>     Return[result]
>   ]
> 

Is there any disadvantage to using the simpler 

	ReadList["!cmd",Record]

which works on Unix and Windows NT at least ?

John Jowett 

----------------------------------------------------------------------
My home page:    http://wwwslap.cern.ch/~jowett/
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