#!/bin/bash									      |	#!/bin/sh

for round in `seq 0 50`								      |	export round=0
										      >	while [ "$round" -le "50" ]
do											do
  echo "`date`: Starting round $round"							  echo "`date`: Starting round $round"
  for offset in `seq 1 5`							      |	  export offset=1
										      >	  while [ "$offset" -le "5" ]
  do											  do
    let octet=offset+5*round							      |	    octet=`expr $round \* 5`
										      >	    octet=`expr $octet + $offset`
    [ "$octet" != "255" ] && nmap -P0 -O 192.168.196.$octet > ${octet}.nmap 2>&1 &	    [ "$octet" != "255" ] && nmap -P0 -O 192.168.196.$octet > ${octet}.nmap 2>&1 &
										      >	    offset=`expr $offset + 1`
  done											  done
  echo "`date`: Waiting for round $round"						  echo "`date`: Waiting for round $round"
  wait											  wait
										      >	  round=`expr $round + 1`
done											done