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

[Christofer Bogaso]

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,

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