ip_address_private

#!/usr/bin/env bash

# allow invokation of related scripts in this dir
scriptdir=`dirname "$BASH_SOURCE"`
PATH="$scriptdir:$PATH"

if [ x"`uname -a | grep -i buntu | wc -l 2>/dev/null`" == x"1" ] ; then
        # Ubuntu
        ip_address=`echo $(hostname -I)`
        echo $ip_address
        # else:  ifconfig eth0 | grep "inet addr" | awk -F: '{print $2}' | awk '{print $1}'
        exit

fi
if [ x"`uname -a | grep -i Linux | wc -l 2>/dev/null`" == x"1" ] ; then
        # Redhat
        ip_address=`echo $(hostname -I)`
        echo $ip_address
        # else:  ifconfig eth0 | grep "inet addr" | awk -F: '{print $2}' | awk '{print $1}'
        exit
fi

# Else
# Mac OSx
# lo0                             0xff000000                        127.0.0.1        ::1
# en1        00:23:12:55:3b:34    0xffffff00       192.168.0.255    192.168.0.141    fe80::223:12ff:fe55:3b34%en1

ip_interfaces | while read interface macaddr mask subnet ip_address xx
do
        case "$interface" in
        "en0"|"en1") echo $ip_address; exit;;
        *) continue;;
        esac
done