Sharing desktop via VNC

Install tigervnc.

Generate a password.

$ vncpasswd ~/.vncpasswd
Password:
Verify:
Would you like to enter a view-only password (y/n)? n

Run x0vncserver.

$ x0vncserver -passwordfile ~/.vncpasswd

Check if the firewall is not blocking connections to the port 5900 and try to access the current desktop using a VNC client from other machine.