How to use pipe to parse output of a command

Question

I want to process the output of a process, say ifconfig. As you all know output of ifconfig is a list of lines containing inet addr: mask: etc. But I want to extract the ip alone[from inet addr: field] and list it. is it possible with pipe command? like

ifconfig | What should be here?

I want the output of this command as list of inet addresses (of different access points if present).

Answer 1

You can achieve this using awk as shown on this site. I've posted an excerpt here which produces your desired result:

ifconfig | awk '/dr:/{gsub(/.*:/,"",$2);print$2}'

Answer 2

You can do

 ifconfig -a|grep inet| awk -F' ' '{print $2}'