shell脚本模拟手动插拔断网联网测试

#!/bin/sh

echo date

i=1   
while [ 1 ] ; do
   echo "count is $i"  
   echo "now down network..."
   ifconfig eth0 down
   sleep 5

   echo "now up network..."
   ifconfig eth0 up

   sleep 10

   i=$((i+1))

done

echo "end..."