#! /bin/sh#進程名字可修改PRO_NAME=udhcpcWLAN=ra0 while true ; do #    用ps獲取$PRO_NAME進程數量  NUM=`ps aux | grep ${PRO_NAME} | grep -v grep |wc -l`#  echo $NUM#    少于1，重啟進程  if [ "${NUM}" -lt "1" ];then    echo "${PRO_NAME} was killed"    ${PRO_NAME} -i ${WLAN}#    大于1，殺掉所有進程，重啟  elif [ "${NUM}" -gt "1" ];then    echo "more than 1 ${PRO_NAME},killall ${PRO_NAME}"    killall -9 $PRO_NAME    ${PRO_NAME} -i ${WLAN}  fi#    kill僵尸進程  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}  fidone exit 0