Question

I have a simple task:

From such output:

[root@localhost:~]# racoonctl -s /var/racoon/racoon.sock ss isakmp
Destination            Cookies                           Created
89.208.102.86.500      d0a641ed0aa7bfe9:7ae3428b08fab146 2013-02-04 15:32:18

need to take only IP address string and date string (in different requests).

For IP I have wrote following regexp:

[root@localhost:~]# racoonctl -s /var/racoon/racoon.sock ss isakmp | sed -ne 's/^\(\([0-9]\{1,3\}\.\)\{3\}[0-9]\{1,3\}\).*/\1/p'
89.208.102.86

But for date doesn’t work

[root@localhost:~]# racoonctl -s /var/racoon/racoon.sock ss isakmp | sed -ne 's/^.*\([0-9]\{4\}\(\-[0-9]\{2\}\)\{2\}\  \([0-9]\{2\}:\)\{2\}[0-9]\{2\}\)$/\2/p'
[root@localhost:~]# 

Can not understand where is the error?

Also I want to change /(expression/) and /{expression/} using flag -r, but have no idea how will do it

Thank you in advance

P.S.
also I know about alternative variant:

[root@localhost:~]# racoonctl -s /var/racoon/racoon.sock ss isakmp |awk -F\. '/[0-9]/ {print $1"."$2"."$3"."$4}' 
89.208.102.86

[root@localhost:~]# racoonctl -s /var/racoon/racoon.sock ss isakmp | awk '/[0-9]/ {print $3 " " $4}'
2013-02-04 15:32:18

But I want to do it on sed, for my future hadrly tasks.

Answer 1

You can use following sed:

sed -ne 's/^.*\([0-9]\{4\}\(\-[0-9]\{2\}\)\{2\} \)/\1/p'

to get your date.