linux shell实现守护进程看门狗脚本

时间：2022-04-03 16:15

昨天做了一个udhcpd与udhcpc的守护，目前只会用shell模仿编写，还有什么方法可以做守护呢？

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 #! /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