[R] showing available environment variables

[Gabor Grothendieck]

These retrieve and set environment variables:

?Sys.getenv
?Sys.putenv

On 11/29/06, Karin Lagesen <karin.lagesen at medisin.uio.no> wrote:
>
> I have searched through the mailing lists and the docs, and I seem
> completely unable to find a way to make R list all available
> environment variables that it uses.
>
> The reason that I want to do this is the following:
>
> The default program for reading files when using openVignettes on my
> system is ggv. ggv is broken. I would therefore like to use a
> different program, and I found the variable R_PDFVIEWER which should
> do the trick. However, so far no luck.
>
> Therefore, how do I ask R what variables are available, and how do I
> get it to show what it is currently set to.
>
> Thanks!
>
> Karin, who is most likely going blind
> --
> Karin Lagesen, PhD student
> karin.lagesen at medisin.uio.no
> http://folk.uio.no/karinlag
>
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