$ sudo apt-get install xfce4

#!/bin/sh

    # Uncomment the following two lines for normal desktop:
    # unset SESSION_MANAGER
    # unset DBUS_SESSION_BUS_ADDRESS 
    #上面这句话如果在xubuntu桌面环境下开启vnc的话最好取消注释
    # exec /etc/X11/xinit/xinitrc

    [ -x /etc/vnc/xstartup ] && exec /etc/vnc/xstartup
    [ -r $HOME/.Xresources ] && xrdb $HOME/.Xresources
    xsetroot -solid grey
    vncconfig -iconic &
    x-terminal-emulator -geometry 80x24+10+10 -ls -title "$VNCDESKTOP Desktop" &
    # x-window-manager &
    x-session-manager & 
    xfdesktop & xfce4-panel &     
    xfce4-menu-plugin &     
    xfsettingsd &     
    xfconfd &     
    xfwm4 &