1./usr/X11R6/bin/Xprt 2./usr/X11R6/bin/Xnest 3./usr/X11R6/bin/Xvfb 4./usr/X11R6/man/cat1/Xnest.0 5./usr/X11R6/man/cat1/Xserver.0 6./usr/X11R6/man/cat1/Xvfb.0 7