pingscan.sh

   1 echo pings:
   2 for i in $(seq 0 255); do
   3         host=$(echo "$1" | sed -e "s/\*/$i/g");
   4         echo -ne "$host\r";
   5         ping -bc 1 -W 1 "$host" &>/dev/null &
   6         pids="$! $pids";
   7 done;
   8 echo
   9 echo pongs:
  10 wait $pids;
  11 arp -a | grep -v incomplete