Steps to Enable display on Linux machine:

Steps:

1. Switch to root user (If not in already):

            $ su -
           Enter password

2. Type the below command as root user:

          # export DISPLAY=machine:0.0;

3. Check it is set or not by entering the below command:

         #echo $DISPLAY

4. Disable the hostname access

         # xhost + (or) # xhost + hostname

5. Check GUI is working or not by entering the below command:

       # xclock

6. Switch to normal user :

      # su - username
     Enter password

7. Type below commands to access the GUI:

     $ xhost  +

8. Type xclock command in the command prompt

Note: If we need the same GUI in windows machine, need to install X client or windows related display tools.