On 12-05-22 1:24 PM, Michael wrote:
In R, how do I execute a script that sets environment variables within the
same shell session?
Hi all,
Could you please shed some lights on how to do this?
In a shell, I launched the R session.
But then in R, I realized that some environment variables need to be set up.
Of course I can use "Sys.setenv()"...
But I have so many of them...
And for some special reason, I have to first launch R and then run the
script from within R to set up the environment variables...
i.e.
I cannot do the other way around, which is first execute the script in the
shell,
and then launch the R session(which is the usual sequenc of ordering)...
So my question is:
I have to launch R session first, and then run the scrip from within R.
But if I naively use "shell" or "system", that's going to not affect the
same shell that the R is using...
I would like the R session to be able to access those "global" environment
variables...
How do I do that?
You already answered it. Use Sys.setenv(). It will only affect the
current process.
Duncan Murdoch
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