[R] Calling FING.EXE under RGui.EXE for windows.

[Uwe Ligges]

On 07.01.2010 02:04, Gabor Grothendieck wrote:
> If you have C:\Rtools\bin on your PATH note that it contains a
> UNIX-like find utility that conflicts with the find utility in
> Windows.  If that is the problem then remove that from your PATH and
> then run the batch file.
>
> The batchfiles distribution at http://batchfiles.googlecode.com  has
> utilities (Rgui.bat, R.bat, Rtools.bat, etc.) that will automatically
> add C:\Rtools\bin to your path temporarily or only while R is running
> so that you can leave it off your PATH.


I guess it's the use of system() rather than shell() that causes the 
problem. Under Windows, you have to use shell in order to start a 
command interpreter.

Uwe Ligges


> On Wed, Jan 6, 2010 at 6:51 PM, John Schexnayder<jschex at us.ibm.com>  wrote:
>> This is sort of a strange bug.  Not show stopping, but annoying.  I was
>> wondering if anyone else has noticed this and reported it before I submit
>> a bug report.
>>
>> I noticed while running the RGui and attempting to debug one of my scripts
>> that I encountered a Windows error informing me that "Find String [grep]
>> Utility has encountered a problem and needs to close."  It is being
>> generated by a call to a DOS batch file which contains a call to Find.exe.
>>   It can be reproduced by simply typing  "System("find")" in RGui.  What I
>> found strange is that I have been running this script daily without this
>> problem for months.  I now realize I never ran that portion of the script
>> while in RGui.exe.  It has always run in batch mode which is done by
>> Rterm.exe.
>>
>> I have tried this on three separate machines now all running Windows XP
>> SP3, with versions of R 2.8.1 and R 2.10.1  If executing "System("find")
>> under RGui, an error window for the Find String Utility is generated and
>> the command is not exectuted.  If the same command is issued in Rterm the
>> expected "FIND: Parameter format not correct" message is properly
>> returned.
>>
>> It doesn't seem an important bug, but it could be the canary in the mine
>> for a larger problem somewhere down the road.
>>
>> Re,
>> John Schexnayder
>>
>> IBM Tape Manufacturing - Information Technology
>> San Jose, CA  95138
>> JSchex at us.ibm.com
>>
>>         [[alternative HTML version deleted]]
>>
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>
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