局域网检测网络能否ping通

# !/bin/bash
for i in `seq 1 254 `
do
   ping -c 1 192.168.163.$i > /dev/null 
   if [ $? -eq 0 ] 
   then 
	echo "能拼通:192.168.163.$i"   	  
    
   else 
	echo "192.168.163."$i" ping不通" >> /root/shell/log.txt
	
   fi 	 	 		
done