Nmap Random ip List

#!/bin/bash

if [ x"${1}" = x"" ] ; then
        echo
        echo "Nmap Random ip List"
 echo
        echo "Author: homen3 "
        echo "License: GPL"
        echo
        echo "Usage: nmap-random.sh [PORT]"
        ##### ################################################################################
        echo
        exit
fi

function isint() {
 ret=0
 test -z $1 -o -n "$(echo $1 | grep  '^-\?[0-9]\+$')" || ret=1
 return $ret
}
if isint "1" ; then
        echo
 echo "this can take a while. get a coffe."
 nmap -v -iR 100000 -P0 -p $1 | tee /tmp/random-scan-at-$1
 cat /tmp/random-scan-at-$1 | grep Discovered > random-scan-result
 rm /tmp/random-scan-at-$1
 exit
fi

# hack0wn.com [2009-04-19]