getip.sed

getip.sed

#! /bin/sed -nf

# Usage: 
#   ip addr | sed -nf getip.sed | column -t

/^[[:digit:]]/ {
	: begin
	s/^[[:digit:]]\+: \([[:graph:]]\+\).*/\1/
	h
	: loop
	n
	/^[[:digit:]]/b begin
	s/.*inet \([[:digit:]\.\/]\+\).*/\1/
	T loop
	H
	x
	s/\n/ /
	p
}

How it works:

Pattern Space	Hold Space
interface	...

h

Pattern Space	Hold Space
interface	interface

n

Pattern Space	Hold Space
address	interface

H

Pattern Space	Hold Space
address	interface\naddress

x

Pattern Space	Hold Space
interface\naddress	address