In case if you want to check the public IP address from within your Linux shell, then you can use either of the following commands to extract the public IP address:
wget -qO- checkip.dyndns.org|sed -e ‘s/.*Current IP Address: //’ -e ‘s/<.*$//'
curl -s checkip.dyndns.org|sed -e 's/.*Current IP Address: //' -e 's/<.*$//'
This is very useful when you don’t have a GUI and you have IP configured on your Load Balancer.