Ubuntu Install gnome and vnc

apt-get update -y
apt-get upgrade -y

apt-get install gnome-core -y

apt-get install vnc4server -y

vncserver

vncserver -kill :1

vim /root/.vnc/xstartup

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#!/bin/sh

# Uncomment the following two lines for normal desktop:
unset SESSION_MANAGER
#exec /etc/X11/xinit/xinitrc
gnome-session --session=gnome-classic &

[ -x /etc/vnc/xstartup ] && exec /etc/vnc/xstartup
[ -r $HOME/.Xresources ] && xrdb $HOME/.Xresources
xsetroot -solid grey
vncconfig -iconic &
#x-terminal-emulator -geometry 1280x1024+10+10 -ls -title "$VNCDESKTOP Desktop" &
#x-window-manager &

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vncserver -geometry 1280x1024