[HowTo] Check public ip via command line

mkdir bin
cd /bin
nano whatismyip.sh

#!/bin/bash

echo Your external IP Address is :
#wget http://www.whatismyip.com -O - -o /dev/null | grep '<TITLE>' | sed -r 's/<TITLE>WhatIsMyIP\.com \- //g' | sed -r 's/<\/TITLE>//g'
wget http://automation.whatismyip.com/n09230945.asp -O - -o /dev/null
echo

exit 0


press ctrl+o
press enter
press ctrl+x


chmod u+x

to run :

/bin/./whatismyip.sh


ref : http://ubuntuforums.org/showthread.php?t=526176