Thank you all for the suggestions. I've been trying different things to make
this work.
Mike I did try what you suggested . It would work normally But i guess here
the problem is my local server itself. It by default takes time to start and
nothing I do is helping . So I came up with the idea to communicate with the
server through R-java connection.
I am halfway through that , I hope it works:)
Thank you all for the response.
On Tue, Apr 5, 2011 at 4:36 PM, Jeff Newmiller <jdnew...@dcn.davis.ca.us>wrote:
> The ampersand is a good idea, but nohup is best avoided in scripts. Rather
> the server itself should handle the transition to daemon status to avoid
> ending up with many duplicate server processes running.
> ---------------------------------------------------------------------------
> Jeff Newmiller The ..... ..... Go Live...
> DCN:<jdnew...@dcn.davis.ca.us> Basics: ##.#. ##.#. Live Go...
> Live: OO#.. Dead: OO#.. Playing
> Research Engineer (Solar/Batteries O.O#. #.O#. with
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> ---------------------------------------------------------------------------
>
> Sent from my phone. Please excuse my brevity.
>
> Mike Marchywka <marchy...@hotmail.com> wrote:
>>
>> ------------------------------
>> > Date: Tue, 5 Apr 2011 13:37:12 +0530
>> > From: nandan.a...@gmail.com
>> > To: rasanpreet.k...@gmail.com
>> > CC: r-help@r-project.org
>> > Subject: Re: [R] system() command in R
>> >
>> > On 4 April 2011 16:54, rasanpreet kaur suri wrote:
>> >
>> > > Hi all,
>> > > I have a local server insalled on my system and have to start that from
>> > > within my R function.
>> > >
>> > > here is how I start it:
>> > >
>> > > cmd<-"sh start-server.sh"
>> > >
>> > > system(cmd, wait=FALSE)
>> > >
>> > > My function has to start the server and proceed with further steps. The
>> > > server starts but the further steps of the program are not executed.The
>> > > cursor keeps waiting after the server is started.
>> > >
>> > > How r u executing further steps after starting server, meant for server
>> > from R ??
>> >
>> >
>> > i tried removing the wait=FALSE, but it still keeps waiting.
>> > >
>> > > I also tried putting the start-server in a separate function and my
>> > > further
>> > > script in a separate function and then run them together, but it still
>> > > waits. The transition from the start of server to next step is not
>> > > happening.
>> > >
>> > > Please help. I have been stuck on this for quite some time now.
>> > >
>> > > --
>>
>> I hadn't done this in R but expect to do so soon.
>> I just got done with some java code to do something similar and you can
>> expect in any implementation these things will be system dependent. It
>> often helps to have simple test cases to isolate the problem. Here I made a
>> tst script called "foo"
>> that takes a minute or so to exevute and generates some output.
>>
>> If I type
>> system("./foo",wait=F)
>> the prompt comes back right away but stdout seems to still go to my console
>> and maybe stdin is not redicrected either and it could eat your input ( no
>> idea, but this is probably not what you want).
>>
>> I did try this that could fix your problem, on debian anyway it seems to
>> work,
>>
>> system("nohup ./foo &")
>> you can "man nohup" for details.
>>
>> > > Rasanpreet Kaur
>> > >
>> > > [[alternative HTML version deleted]]
>> > >
>> > >
>> ------------------------------
>> > > R-help@r-project.org mailing list
>> > > https://stat.ethz.ch/mailman/listinfo/r-help
>> > > PLEASE do read the posting guide
>> > > http://www.R-project.org/posting-guide.html
>> > > and provide commented, minimal, self-contained, reproducible code.
>> > >
>> >
>> >
>> >
>> > --
>> > Amar Kumar Nandan
>> > Karnataka, India, 560100
>> > http://aknandan.co.nr
>> >
>> > [[alternative HTML version deleted]]
>> >
>> >
>> ------------------------------
>> > R-help@r-project.org mailing list
>> > https://stat.ethz.ch/mailman/listinfo/r-help
>> > PLEASE do read the posting guide
>> > http://www.R-project.org/posting-guide.html
>> > and provide commented, minimal, self-contained, reproducible code.
>> ------------------------------
>> R-help@r-project.org mailing listhttps://stat.ethz.ch/mailman/listinfo/r-help
>> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
>> and provide commented, minimal, self-contained, reproducible code.
>>
>>
--
Rasanpreet Kaur
[[alternative HTML version deleted]]
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