清华大佬耗费三个月吐血整理的几百G的资源，免费分享！....>>>

#! /bin/sh
#进程名字可修改
PRO_NAME=udhcpc
WLAN=ra0

while true ; do

#       用ps获取$PRO_NAME进程数量
	NUM=`ps aux | grep ${PRO_NAME} | grep -v grep |wc -l`
#	echo $NUM
#       少于1，重启进程
	if [ "${NUM}" -lt "1" ];then
		echo "${PRO_NAME} was killed"
		${PRO_NAME} -i ${WLAN}
#       大于1，杀掉所有进程，重启
	elif [ "${NUM}" -gt "1" ];then
		echo "more than 1 ${PRO_NAME},killall ${PRO_NAME}"
		killall -9 $PRO_NAME
		${PRO_NAME} -i ${WLAN}
	fi
#       kill僵尸进程
	NUM_STAT=`ps aux | grep ${PRO_NAME} | grep T | grep -v grep | wc -l`

	if [ "${NUM_STAT}" -gt "0" ];then
		killall -9 ${PRO_NAME}
		${PRO_NAME} -i ${WLAN}
	fi
done

exit 0