Package xorg-x11-server-Xvfb

A X Windows System virtual framebuffer X server

http://www.x.org

Xvfb (X Virtual Frame Buffer) is an X server that is able to run on
machines with no display hardware and no physical input devices.
Xvfb simulates a dumb framebuffer using virtual memory. Xvfb does
not open any devices, but behaves otherwise as an X display. Xvfb
is normally used for testing servers.

General Commands
Command Description
Xvfb virtual framebuffer X server for X Version 11