#!/bin/sh

for arg in "$@"
do
    case "$arg" in
        status) status=1 ;;
    esac
    shift
done

_ifconfig() { 
    [ -z "$_ifdata" ] \
        && _ifdata="$(ifconfig)"
    echo "$_ifdata"
}

_interfaces="$(_ifconfig | egrep "^[a-z]" | cut -d: -f1 | egrep -v "lo0|enc0|pflog0" | xargs)"

if [ -n "$status" ]
then
    for _dev in $_interfaces
    do
        # something with awk
    done
fi