Final

0x08-networking_basics_2/0-change_your_home_IP

@@ -0,0 +1,9 @@
+#!/usr/bin/env bash
+# changes the following domain resolve ips
+#   localhost from 127.0.0.1 to 127.0.0.2
+#   facebook.com from 157.240.11.35 to 8.8.8.8
+
+cp /etc/hosts ~/hosts.new
+echo "127.0.0.2		localhost" > ~/hosts.new
+echo "8.8.8.8		facebook.com" >> ~/hosts.new
+cp -f ~/hosts.new /etc/hosts

0x08-networking_basics_2/1-show_attached_IPs

@@ -0,0 +1,8 @@
+#!/usr/bin/env bash
+# Displays all acive IPv4 addresses on the machine.
+
+# a different way using ifconfig but now ip is a new command and ifconfig can be missing in some os
+#ifconfig | grep -Eo "inet (addr:)?([0-9]*\.){3}[0-9]*" | awk '{print $2}'
+
+ip -4 -o addr show | awk '{print $4}' | cut -d "/" -f 1
+

0x08-networking_basics_2/100-port_listening_on_localhost

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+#!/usr/bin/env bash
+# a script that listens on poer 98 on localhost
+
+nc -l localhost 98

0x08-networking_basics_2/README.md

@@ -0,0 +1 @@
+0x08. Networking basics #1