Social Engineering : Social Engineering Frequently Asked Questions : How do I get the Xvfb package?

How do I get the Xvfb package?
To install the Xvfb package on Ubuntu, open a terminal and run the following command:
$ sudo apt-get install xvfb
To install the Xvfb package on CentOS, open a terminal and run the following command:
$ sudo yum install xorg-x11-server-Xvfb