how to run "gradle run" through xvfb?

Question

What are the equivalent directions for Ubuntu?

On your CentOS 6.3 host

Follow these steps to set up a CentOS 6.3 host to run headless Selenium tests with Firefox.

sudo yum -y install firefox Xvfb libXfont Xorg
sudo yum -y groupinstall "X Window System" "Desktop" "Fonts" "General Purpose Desktop" (installation takes a few minutes)
Launch an XWindows Virtual Frame Buffer(XVFB) session on display port 99: Xvfb :99 -ac -screen 0 1280x1024x24 &
Tell all XWindows applications in this terminal session to use the new Xvfb display port: export DISPLAY=:99
Start the Selenium server, eg: java -jar /opt/selenium-server-standalone.jar &
Now start your Selenium tests. The Selenium server should spawn a headless Firefox instance and your tests should run successfully.

https://gist.github.com/textarcana/5855427

I ask because I use Gradle, so this is in the context of making a Gradle task, or, without using jar, just the default gradle run task with xvfb.

Preferably, how do I run the gradle run task through xvfb?

Current usage:

thufir@mordor:~/NetBeansProjects/selenium$ 
thufir@mordor:~/NetBeansProjects/selenium$ gradle run
:compileJava UP-TO-DATE
:processResources UP-TO-DATE
:classes UP-TO-DATE
:run
http://thufir.github.io/javascript/
^Cthufir@mordor:~/NetBeansProjects/selenium$ 

Answer 1

You likely don't want to run a gradle task through Xvfb, but rather execute something within an X Windows Virtual Frame Buffer FROM a gradle task.

For example your gradle test task might do:

xvfb-run -a --server-args='-screen 0, 1024x768x24' google-chrome -start-maximized http://runMyLocalBrowserBasedTest > /dev/null &