Hi Hui,

May be sessionInfo() is what you are looking for. See ?sessionInfo as well
as ?version for more details. You can run the following on your R session
and see what comes up:

sessionInfo()
sessionInfo()$R.version$platform
version$platform

Then, you might use ifelse() to set up the right path.

HTH,
Jorge


On Fri, Feb 25, 2011 at 1:23 PM, Hui Du <> wrote:

> Hi All,
>
>                I have two Rs, one has been installed in Windows system and
> another one has been installed under UNIX system. Is there any environmental
> variable or function to tell me which R I am using? The reason that I need
> to know it is under different system, the data path could be different. I
> want to do something like
>
> if it is R under Windows
>
>                path = "/ABC"
> else if it is R under UNIX,
>                path = "/DEF"
>
> Any idea? Thanks.
>
> Best Regards,
>
> HXD
>
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>
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