discover-live-hosts-netmask-request-discovery.sh

#!/bin/bash

#    This file is part of PenTestKit
#    Copyright (C) 2017-2020 @maldevel
#    https://github.com/maldevel/PenTestKit
#
#    PenTestKit - Useful tools for Penetration Testing.
#
#    This program is free software: you can redistribute it and/or modify
#    it under the terms of the GNU General Public License as published by
#    the Free Software Foundation, either version 3 of the License, or
#    (at your option) any later version.
#
#    This program is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU General Public License for more details.
#
#    You should have received a copy of the GNU General Public License
#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
#
#    For more see the file 'LICENSE' for copying permission.


if [[ $EUID -ne 0 ]]; then
  echo "For better results, please run this script as root." 1>&2
  exit 1
fi

if [ $# -eq 1 ]; then
  LOGNAME="live_hosts_netmask_$1"
  LOGNAME=$(echo "$LOGNAME" | sed -r 's/[/]+/_/g' | sed -r 's/[.]+/_/g')
  LOGNAME2="$LOGNAME.txt"
  nmap -vv -n -sn -PM -oA $LOGNAME $1 | grep -w 'report' | grep -v 'host down' | sed 's/Nmap scan report for //' | sort -u -n -t . -k 1,1 -k 2,2 -k 3,3 -k 4,4 | tee $LOGNAME2
else
	echo "Please provide the target IP range."
fi