[Rd] Bug in Sys.which()?

[Dan Tenenbaum]

On Mon, Nov 28, 2011 at 2:34 PM, Duncan Murdoch
<murdoch.duncan at gmail.com> wrote:
> On 11-11-28 5:20 PM, Dan Tenenbaum wrote:
>>
>> At a Windows command prompt:
>> C:\>which ls
>> /cygdrive/c/Rtools215/bin/ls
>>
>> C:\>which perl
>> /cygdrive/c/perl/bin/perl
>>
>> In R:
>>>
>>> Sys.which(c("ls", "perl"))
>>
>>                          ls                        perl
>> "c:\\RTOOLS~3\\bin\\ls.exe"                          ""
>>
>> Is this expected behavior?
>
> R doesn't necessarily have the same search path as your command prompt.
>  (Look at PATH in your command line, and Sys.getenv("PATH") in R, to
> compare.) When I try Sys.which() that with two things known to be on the
> path that R uses, it finds both.

Thanks.
PEBKAC.

Dan

>
> Duncan Murdoch
>
>>
>>> sessionInfo()
>>
>> R Under development (unstable) (2011-10-28 r57459)
>> Platform: i386-pc-mingw32/i386 (32-bit)
>>
>> locale:
>> [1] LC_COLLATE=English_United States.1252
>> [2] LC_CTYPE=English_United States.1252
>> [3] LC_MONETARY=English_United States.1252
>> [4] LC_NUMERIC=C
>> [5] LC_TIME=English_United States.1252
>>
>> attached base packages:
>> [1] stats     graphics  grDevices utils     datasets  methods   base
>>
>> loaded via a namespace (and not attached):
>> [1] tools_2.15.0
>>
>>
>> Thanks,
>> Dan
>>
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>
>