嵌入式初學(xué)者，第一次上傳代碼。昨天做了一個(gè)udhcpd與udhcpc的守護(hù)，目前只會(huì)用shell模仿編寫，還有什么方法可以做守護(hù)呢？
#! /bin/sh
#進(jìn)程名字可修改
PRO_NAME=udhcpc
WLAN=ra0
while true ; do
# 用ps獲取$PRO_NAME進(jìn)程數(shù)量
NUM=`ps aux | grep ${PRO_NAME} | grep -v grep |wc -l`
# echo $NUM
# 少于1，重啟進(jìn)程
if [ "${NUM}" -lt "1" ];then
echo "${PRO_NAME} was killed"
${PRO_NAME} -i ${WLAN}
# 大于1，殺掉所有進(jìn)程，重啟
elif [ "${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(jìn)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
