RHEED for Linux is designed to aquire data from RHEED (Reflection High Energy Electron Diffraction) images in Molecular Beam Epitaxy and for controlling an electron beam gun. It is possible to determine growth rate of a semiconductor crystal from RHEED-Oscillations, to aquire Lines Of Interest (LOIs) in realtime, and develop incident angle dependent intensity curves. The Electron Beam Gun EK35BR from Staib Instruments is supported.