[R] good documentation on use of Rscript. where to find?
murdoch.duncan at gmail.com
Thu Oct 18 19:11:39 CEST 2012
On 18/10/2012 12:56 PM, Paul Johnson wrote:
> What is the correct format for the shebang line and what options are
> allowed or necessary along with this?
> I find plenty of blogs and opinions, but few authoritative answers.
The authoritative source for the options is the R help page ?Rscript.
The authoritative answers for the format are likely slightly more
difficult, because it is your shell that processes the file, it's not R
handling the command line. But ?Rscript does give examples.
> I want an R script to run and update packages periodically, with a
> cron job that launches it. What is necessary to put in
> line one of the R program. Aside from the basic part
> what else can there be, or should there be?
> Various people suggest adding things like "--vanilla" but those seem
> not to be accepted, at least on RedHat EL 6 with R-2.15.1. I'd like
> to run this with a command line like:
> $ R-labSelectInstall-02.R > /tmp/Rupdate.txt 2>&1
> so that all the standard output and err goes to a text file, but I've
> not found a way to make it work comparably to the R command line
> option --vanilla or such.
> # ./R-labSelectInstall-02.R --vanilla
> 'ARNING: unknown option '--vanilla
> See what I mean?
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