#!/bin/sh# Network configuration script for the Pixil Operating Environment## Usage:  ./pixil-ifdown <device> # Explanation:# Bring down the specified interfaceCONFIG=${1}[ -z "${CONFIG}" ] && {  echo "usage:  ./pixil-ifdown <config | device>"  exit 1}[ -f "${CONFIG}" ] || CONFIG=/usr/local/pixil/scripts/pixil-${CONFIG}.conf[ -f "${CONFIG}" ] || {  echo "Usage:  ./pixil-ifdown <config | device>"  exit 1}source ${CONFIG}# First, check if the interface is upif [ -z ifconfig ${DEVICE} 2>/dev/null | grep " UP " >/dev/null 2>&1 ]; then   echo "Device ${DEVICE} is not started!"   exit 1fiif [ "${PROTO}" = dynamic ]; then   [ -n "`/sbin/pidof -x pump`" ] && {      /sbin/pump -r -i ${DEVICE}  }fi#if [ "${PROTO}" = dynamic ]; then#   [ -n "'/sbin/pidof -x dhcpcd'" ] && {#	/sbin/dhcpcd -k ${DEVICE}#   }#fi/sbin/ifconfig ${DEVICE} down# Wait a little while (thanks redhat for this code)waited=0while /sbin/ifconfig ${DEVICE} 2>/dev/null | grep " UP " >/dev/null 2>&1 && [ "$waited" -lt 50 ]; do    sleep 1   waited=$(($waited + 1))done