another working Example:
{ echo "print( 1)"; cat;} | R --interactive
but do not end with <ctrl>-D, it overrides the
"save workspace" question; use q() instead
there is an additional echo where i don't know
how to avoid them
On Thu, Nov 01, 2012 at 09:14:09AM +0100, Jan van der Laan wrote:
>
> I have a r-script (rook.R) that starts a Rook server. To present users
> from having to start R and type in source("rook.R"), I want to create
> a bash script and bat file that starts R and sources the script.
> However, to keep the Rook server running R should not close after
> running the script and stay in interactive mode. This proves more
> difficult than expected.
>
> I tried various combinations of commandline parameters and pipes, but
> none of them seem to work:
>
> $R -f rook.R --interactive
> Runs and quits
>
> $ cat rook.R | R
> Fatal error: you must specify '--save', '--no-save' or '--vanilla'
>
> $cat rook.R | R --no-save
> Runs and quits
>
> $R --no-save < rook.R
> Runs and quits
>
> $R --no-save --interactive < rook.R
> Runs and quits
>
> I would have expected the --interactive parameter to do what I want,
> but it doesn't seem to do anything.
>
> What does work is to create a .Rprofile with sourc("rook.R") in it in
> the directory and then start R (just plain R). However I don't find
> this a very elegant solution. I could of create the .Rprofile file in
> the bash script which is somewhat better, but still not very elegant.
> I end up with the following bash script:
>
> #!/bin/bash
> echo "source(\"rook.R\")" > .Rprofile
> R
>
> Another, not very elegant, possible solution which I haven't tried is
> to start a while loop at the end of the script with a sleep command in
> it.
>
> Does there exist a better solution?
>
> Regards,
>
> Jan
>
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