#!/bin/bash
for  i  in   {1..254}
do
          ping -c2 ‐i0.3 -W1 192.168.4.$i  &>/dev/null
         if  [ $? -eq 0 ];then
               echo "192.168.4.$i is up"
         else
               echo  "192.168.4.$i is down"
         fi
done