set up of selenium server running in x virtual framebuffer

yum install  xorg-x11-server-Xvfb
yum install xorg-x11-fonts*
yum install libXfont

run in background

 DISPLAY=:1 xvfb-run java -jar  /usr/local/bin/selenium-server-standalone-2.31.0.jar  &

# netstat -tupln |grep :::4444

tcp        0      0 :::4444                     :::*                        LISTEN      17369/java