Bash script for *nix systems to display your Public IP Address.

my_ip.sh

#!/bin/bash
# Display Public IP Address
# USAGE: my_ip
# Other Commands:
# `wget -qO- ifconfig.me/ip`
# `curl ifconfig.me`
# `wget -qO-  http://shtuff.it/myip/short`

echo "--> Displaying your Public IP Address.."

IPADDR=""
 
if [ -f /usr/bin/ec2metadata ]
then
  IPADDR=`timeout 1 ec2metadata --public-hostname`
fi
 
if [ "$IPADDR" = "" ]
then
        IPADDR=`curl http://www.jsonip.com 2>/dev/null | egrep -o "[0-9\.]*"`
fi
 
if [ "$IPADDR" = "" ]
then
        IPADDR=`ifconfig | perl -ple 'print $_ if /inet addr/ and $_ =~ s/.*inet addr:((?:\d+\.){3}\d+).*/$1/g  ;$_=""' | grep -v ^\s*$ | grep -v 127.0.0.1 | head $
fi
 
if [ "$IPADDR" = "" ]
then
        IPADDR=`cat /etc/hostname | head -n 1`
fi
echo $IPADDR

exit