Identify all IP adresses which are part of the same subnet #ecole42 #school21 #init

init-2b-arp.sh

#!/bin/sh

# (c) Copyright 2019 oadhesiv
# MIT license
# rgbg vavg hxenqra f tvgn, fzryb fgni zvahf fbebx qin

ping -c 2 -b $(ip -o -4 addr show dev en0 | awk '{print $6}')
arp -i en0 -n | grep . | awk '{print $1}'

init-2b-nmap.sh

#!/bin/sh

# (c) Copyright 2019 oadhesiv
# MIT license
# rgbg vavg hxenqra f tvgn, fzryb fgni zvahf fbebx qin

nmap -sL -n $(ip -o -4 addr show dev en0 | awk '{print $4}') | grep 'Nmap scan report for' | cut -f 5 -d ' '

init-2b.py

#!/usr/bin/python3

# (c) Copyright 2019 oadhesiv
# MIT license
# rgbg vavg hxenqra f tvgn, fzryb fgni zvahf fbebx qin

import ipaddress
import os

# You should be on modern system with iproute2
# ipint_str = os.system('ip -o -4 addr show dev en0 | awk \'{print $4}\'')

# This is deprecated
ip = os.system('ifconfig en0 | grep "inet " | awk \'{print $2}\'')
netmask_hex = os.system('ifconfig en0 | grep "inet " | awk \'{print $4}\'')
netmask = bin(int(netmask_hex, 0)).count('1')
ipint_str = '{}/{}'.format(ip, netmask)

ipint = ipaddress.IPv4Interface(ipint)
net = ipint.network
for ip in net.hosts():
  print(ip)