Unix/Linux/MacOSx : Get local IP address

Problem :

How to find out my MacOSX/ Linux / UNIX system ip address, subnet and related networking information from a command prompt?

Solution :

Use this command :

 ifconfig

1. Ifconfig is used to configure the network interfaces during boot time.
2. If no arguments are given to ifconfig command it displays the status of the current active interfaces.
3. It displays Ethernet IP address, Mac address, subnet mask and other information.
4. ifconfig tool is available to all *nix based OS.

Example output :

 lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384
  options=3<RXCSUM,TXCSUM>
  inet6 fe80::1%lo0 prefixlen 64 scopeid 0x1
  inet 127.0.0.1 netmask 0xff000000
  inet6 ::1 prefixlen 128
 gif0: flags=8010<POINTOPOINT,MULTICAST> mtu 1280
 stf0: flags=0<> mtu 1280
 en0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
  ether f8:d1:11:16:ea:34
  inet6 fe80::fad1:11ff:fe16:ea34%en0 prefixlen 64 scopeid 0x4
  inet 192.168.1.65 netmask 0xffffff00 broadcast 192.168.1.255
  media: autoselect
  status: active