#1 	Make sure selenium-server-standalone running 
	kmuthuvel@BOUN03VMA15(162.218.138.83)|~|2017-03-21 15:38:08
	$ps -ef | grep sel
	mjadala  23470 16126  2 15:55 pts/2    00:00:01 java -jar selenium-server-standalone-2.53.0.jar
	1016     25304 19594  0 15:56 pts/8    00:00:00 grep --color sel
	0 ✓ success ^_^  ________________________________________________________________________________

#2	start Xvfb
	kmuthuvel@BOUN03VMA15(162.218.138.83)|~|2017-03-21 15:56:31
	$/usr/bin/Xvfb :2 -ac -screen 0 1600x1200x16
	SELinux: Disabled on system, not enabling in X server
	[dix] Could not init font path element /usr/share/fonts/X11/cyrillic, removing from list!
	[dix] Could not init font path element /var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType, removing from list!

	SELinux: Disabled on system, not enabling in X server
	[dix] Could not init font path element /usr/share/fonts/X11/cyrillic, removing from list!
	[dix] Could not init font path element /var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType, removing from list!

#3 run firefox on DISPLAY 2 & capture the screenshot
	kmuthuvel@BOUN03VMA15(162.218.138.83)|~|2017-03-21 16:10:40
	export DISPLAY=:2 ; firefox https://kesavan.info/
	Xlib:  extension "RANDR" missing on display ":2.0".
	0 ✓ success ^_^  ________________________________________________________________________________
	kmuthuvel@BOUN03VMA15(162.218.138.83)|~|2017-03-21 16:10:44
	$ xwd -root -silent -out screen.xwd
	0 ✓ success ^_^  ________________________________________________________________________________
	kmuthuvel@BOUN03VMA15(162.218.138.83)|~|2017-03-21 16:11:49
	$xwdtopnm < screen.xwd | pnmtojpeg > screen.jpg
	xwdtopnm: writing PPM file
	0 ✓ success ^_^  ________________________________________________________________________________
	kmuthuvel@BOUN03VMA15(162.218.138.83)|~|2017-03-21 16:11:56

#4
	kmuthuvel@BOUN03VMA15(162.218.138.83)|~|2017-03-21 16:11:56
	$export DISPLAY=:2 ; firefox http://yaazh.info
	Xlib:  extension "RANDR" missing on display ":2.0".
	0 ✓ success ^_^  ________________________________________________________________________________
	kmuthuvel@BOUN03VMA15(162.218.138.83)|~|2017-03-21 16:16:14
	$ xwd -root -silent -out screen.xwd ; xwdtopnm < screen.xwd | pnmtojpeg > screen.jpg
	xwdtopnm: writing PPM file
	0 ✓ success ^_^  ________________________________________________________________________________
	kmuthuvel@BOUN03VMA15(162.218.138.83)|~|2017-03-21 16:16:34