PuTTY export client display on login for opening X application and terminal.
export DISPLAY=$(echo $SSH_CLIENT |awk '{print $1”:0.0”}’)
Explanation:
SSH_CLIENT contains the IP and the port of the client machine. So we need to export (Client IP):0.0 for the display on the client machine. If the above is put in .bashrc or .bash_profile or .profile, then the DISPLAY variable will be set based on the client machine.