shell检查网络出现异常、僵尸进程、内存过低后机器自动重启

#!/bin/bash

while :

do

neterror=$(/bin/netstat -a | grep -cw "CLOSE_WAIT")

echo "get tcp netstate 'LISTEN' number cuccessful!"

echo "neterror"$neterror

if [ $neterror -gt "10" ]; then

echo "too much net error,system will reboot now!"

sleep 2

/sbin/reboot -f

fi



freememory=$(free -m | grep Mem | awk '{print $4}')

echo "freesize:"$freememory

if [ $freememory -lt "100" ]; then

echo "the free memory size is less then 100M,system will reboot now!"

sleep 2

/sbin/reboot -f

fi

corpsprocess=$(ps -ef | awk '{print $3$4}' | grep -c "Z")

echo "corpsprocess:"$corpsprocess

if [ $corpsprocess -gt "0" ]; then

echo "system had corps process,system will reboot now!"

sleep 2

/sbin/reboot -f

fi



sleep 2

done