SED: edit ip address
 

Hi, I'm trying to figure out how to use sed to modify a returned ip address from the command:

ifconfig eth1 | grep 'inet addr' | awk '{print $2}' | sed -e 's/.*://'

When run, this returns 10.69.69.1

I need help to rewrite this to return the network address in the form of: 10.69.69.0

Any help would greatly be appreciated.

Thanks!

John

If it spits out "10.69.69.1" and you need "10.69.69.0" you could just append a piped "sed 's/1$/0/'

First, why is it returning the wrong address?

Second, do you need to change any digit in the last position to zero? (or just "1" to "0")

Try

The first sed script will remove the "inet addr:" and the second one will replace the last octet with 0.

Could you please be more specific as to what output you are getting and what you would like to modify it to?