VNC setup in Digitalocean

Install xfce desktop environment

$ sudo apt-get install xfce4 xfce4-goodies

Install TightVNC for VNC server

$ sudo apt-get install tightvncserver

Initialize VNC server + run VNC server once + enter and verify password + ignore view-only password

$ vncserver
Password:
Verify:
View-only password:

To configure VNC, first kill the running VNC server

$ vncserver -kill :1
Killing Xtightvnc process ID 13456

Backup xstartup configuration file

$ mv ~/.vnc/xstartup ~/.vnc/xstartup.orig

Edit xstartup file

$ vim ~/.vnc/xstartup

And add following content

*~/.vnc/xstartup*
#!/bin/bash
xrdb $HOME/.Xresources
startxfce4 &

+ Look at ~/.Xresources file for VNC's GUI framework information + Start XFCE whenever VNC server is started

Provide executable permission for ~/.vnc/xstartup file

$ sudo chmod +x ~/.vnc/xstartup

Start VNC server

$ vncserver -geometry 1280x800