Elaborate Linux Script for determining IP

Sometimes the ordering of your Ethernet adapters are not the same on a specific machine vs the others in your cluster.  So simply grepping the IP based on adapter name can be a little tricky.  So I just made this script to do it for you.

#! /usr/bin/env bash
for network in $(cat /proc/net/dev | grep ':' | cut -d: -f1 | awk '{ print $1 }'); do
if [ "$network" != "lo" ]
then
echo $(/sbin/ifconfig $network | grep 'inet addr:' | cut -d: -f2 | awk '{ print $1}')
fi
done

Clearly you could modify the if condition to fit your needs.