Creating a VNC Server

To see the vncserver currently running:-

[root@localhost ~]# which vncserver

/usr/bin/vncserver

To set the vncserver to a port suppose 0:-
[root@localhost ~]# vncserver :0

You will require a password to access your desktops:-

Password:
Verify:
Warning: localhost.localdomain:0 is taken because of /tmp/.X0-lock 

A VNC server is already running as :0

Remove this file if there is no X server localhost.localdomain:0 or

connect with another port such as 1:-

[root@localhost ~]# ps -ef | grep -X
root      2732  2727  0 16:03 ?        00:00:12 /usr/X11R6/bin/X :0 -audit 0 -auth /var/gdm/:0.Xauth -nolisten tcp vt7
root      3005  2960  0 16:38 pts/1    00:00:00 grep X

Now the vncserver is created/connected with :1:-
[root@localhost ~]# vncserver :1
xauth:  creating new authority file /root/.Xauthority