[R] Correctly executing system code using R in Ubuntu server

[Christofer Bogaso]

It worked. Thanks,

On Tue, Jun 26, 2018 at 2:46 AM William Dunlap <wdunlap using tibco.com> wrote:

> Each call to system() starts and finishes a new shell so your approach
> will not work.
> Does the following do what you need?
>
> > system('Xvfb :10 -ac &')
> > Sys.setenv(DISPLAY=":10")
> > x11()
> Warning message:
> In x11() : cairo-based types may only work correctly on TrueColor visuals
>
>
>
> Bill Dunlap
> TIBCO Software
> wdunlap tibco.com
>
> On Mon, Jun 25, 2018 at 2:04 PM, Christofer Bogaso <
> bogaso.christofer using gmail.com> wrote:
>
>> Hi,
>>
>> I am curious on how to correctly run System code with R under Ubuntu. I
>> tried to execute below 2 lines of code using system() functions in Ubuntu
>> server, however could not achieve the desired result.
>>
>> system('Xvfb :10 -ac &')
>> system('export DISPLAY=:10')
>>
>> System parameters:
>> > Sys.info()
>>                                        sysname
>>                                        "Linux"
>>                                        release
>>                            "4.4.0-128-generic"
>>                                        version
>> "#154-Ubuntu SMP Fri May 25 14:15:18 UTC 2018"
>>                                       nodename
>>                   "ubuntu-s-2vcpu-4gb-blr1-01"
>>                                        machine
>>                                       "x86_64"
>>                                          login
>>                                         "root"
>>                                           user
>>                                         "root"
>>                                 effective_user
>>                                         "root"
>>
>> Background:
>> I use RSelenium package to perform various testing using web-browser. I
>> have installed firefox to do the same, however to make RSelenium work, it
>> requires display parameter as guided in below link:
>>
>> https://medium.com/@griggheo/running-selenium-webdriver-tests-using-firefox-headless-mode-on-ubuntu-d32500bb6af2
>> I want to set those parameters through R, each time I start R in Ubuntu
>> server.
>>
>> Appreciate for any pointer.
>>
>> Thanks,
>>
>>         [[alternative HTML version deleted]]
>>
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>
>

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