trap 'exit 130' INT

function convert() {

  ips=()

  network=(${1//\// })

  iparr=(${network[0]//./ })

  if [[ $((8-${network[1]})) -gt 0 ]]; then
      netmaskarr=($((256-2**(8-${network[1]}))) 0 0 0)
    elif  [[ $((16-${network[1]})) -gt 0 ]]; then
      netmaskarr=(255 $((256-2**(16-${network[1]}))) 0 0)
    elif  [[ $((24-${network[1]})) -gt 0 ]]; then
      netmaskarr=(255 255 $((256-2**(24-${network[1]}))) 0)
    elif [[ $((32-${network[1]})) -gt 0 ]]; then
      netmaskarr=(255 255 255 $((256-2**(32-${network[1]}))))
    fi

 for i in $(seq 0 $((255-${netmaskarr[0]}))); do
    for j in $(seq 0 $((255-${netmaskarr[1]}))); do
      for k in $(seq 0 $((255-${netmaskarr[2]}))); do
        for l in $(seq 1 $((255-${netmaskarr[3]}))); do
          ips+=( $(( $i+$(( ${iparr[0]}  & ${netmaskarr[0]})) ))"."$(( $j+$(( ${iparr[1]} & ${netmaskarr[1]})) ))"."$(($k+$(( ${iparr[2]} & ${netmaskarr[2]})) ))"."$(($l+$((${iparr[3]} & ${netmaskarr[3]})) )) )
        done
      done
    done
  done
}


convert $1

#echo ${ips[@]}

for i in ${ips[@]}
do
	if ping -c1 $i &> /dev/null
	then
		echo $i "available"
	else
		echo $i "not available"
	fi
done