#!/bin/bash
# ping-scan subnet without other fancy tools
for i in $1.{1..255}
	do 
		if 
			ping -c 1 -W 1 $i >/dev/null
		then 
		    echo "$i: online, hostname: $(host $i | cut -d " " -f 5)"
		else
		    [[ $2 = offlinealso ]] && echo "$i: offline, hostname: $(host $i | cut -d " " -f 5)"
		fi
	  done
exit 0