#!/bin/bash

ping -c1 192.168.1.1
        if [ $? -eq 0 ]
        then
        echo OK
        else
        echo NOT OK
        fi

Change the IP to 192.168.1.235


Don't show the output
ping -c1 192.168.1.1 &> /dev/null
        if [ $? -eq 0 ]
        then
        echo OK
        else
        echo NOT OK
        fi


Define variable
#!/bin/bash

hosts="192.168.1.1"
ping -c1 $hosts &> /dev/null
        if [ $? -eq 0 ]
        then
        echo $hosts OK
        else
        echo $hosts NOT OK
        fi

Change the IP to 192.168.1.235




Multiple IPs
#!/bin/bash

IPLIST="path_to_the_Ip_list_file"


for ip in $(cat $IPLIST)

do
   ping -c1 $ip &> /dev/null
   if [ $? -eq 0 ]
   then
   echo $ip ping passed
   else
   echo $ip ping failed
   fi
done