bin/addr

   1 #!/bin/sh
   2 # Usage: addr [<if>]
   3 # Show IPv4 address for interface <if> or all interfaces with
   4 # no <if> given.
   5
   6 # Darwin/OSX
   7 ifconfig -a        |
   8 grep 'inet '       |
   9 grep broadcast     |
  10 awk '{ print $2 }'
  11
  12 # Linux
  13 ifconfig -a        |
  14 grep 'inet '       |
  15 grep Bcast         |
  16 awk '{ print $2 }'