ip50

#!/bin/bash

# determine IP address
vmm=
if [ "$vmm" == "xen" ]; then
    # this is EC2, fetch public IP from AWS
    declare inet=$(wget --output-document=- --quiet --timeout=5 --tries=10 http://169.254.169.254/latest/meta-data/public-ipv4)
    declare regex='([0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3})'
else
    declare inet=$(ip -f inet addr show eth1 2> /dev/null | grep inet)
    declare regex='inet ([0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3})'
fi

if [[ "$inet" == "" ]]; then
    declare addr="missing network adapter"
elif [[ "$inet" =~ $regex ]]; then
    declare addr=${BASH_REMATCH[1]}
else
    declare addr="no IP address"
fi

# display IP address
if [ "$1" == "-xml" ]; then
    echo "<tool>IP address</tool>"
    echo "<txt>$addr</txt>"
else
    echo $addr
fi