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egrep getting numbers only

 
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# 1  
Old 05-25-2012
egrep getting numbers only
Hello, I am kind of a noob with unix, so i'd like some help.

I am trying to get some ip address with an nmap scan and then put from the result of the scan only the ip numbers

this is an example

Code:
Starting Nmap 5.21 ( Nmap - Free Security Scanner For Network Exploration & Security Audits ) at 2012-05-25 12:29 CEST
Nmap scan report for 114.86.196.165
Host is up (0.50s latency).
PORT   STATE SERVICE
80/tcp open  http

Nmap scan report for twdp-066-026-105-245.nc.res.rr.com (66.26.105.245)
Host is up (0.17s latency).
PORT   STATE SERVICE
80/tcp open  http

Nmap scan report for ns2.km20718.keymachine.de (84.19.181.228)
Host is up (0.071s latency).
PORT   STATE SERVICE
80/tcp open  http

Nmap scan report for 211.143.184.144
Host is up (0.38s latency).
PORT   STATE SERVICE
80/tcp open  http

Nmap scan report for hosted.by.pacificrack.com (66.154.109.107)
Host is up (0.41s latency).
PORT   STATE SERVICE
80/tcp open  http

Nmap scan report for 87-198-189-161.static.ptr.magnet.ie (87.198.189.161)
Host is up (0.12s latency).
PORT   STATE  SERVICE
80/tcp closed http

Nmap scan report for hh-wedc-75-201.lut.ac.uk (158.125.75.201)
Host is up (0.11s latency).
PORT   STATE  SERVICE
80/tcp closed http


what i would like to know is if there is a command (i tried egrep but not with good results) to get only the bolded numbers (both in parenthesis and out) to a file and show them like this
Code:
114.86.196.165
66.26.105.245
84.19.181.228
...

I tried this command but i can only get the one in parenthesis, if i don't use parenthesis it messes up.

Code:
egrep -o "\([0-9]*.[0-9]*.[0-9]*.[0-9]*\)" scan.txt > egrep.txt


Thank you very much in advance!

Moderator's Comments:
Mod Comment Video tutorial on how to use code tags in The UNIX and Linux Forums.
# 2  
Old 05-25-2012
It seems you have a GNU grep so if pcres are available:

Code:
grep -Po '(\d+\.){3}\d+' infile

This User Gave Thanks to radoulov For This Post:
AscaL
# 3  
Old 05-25-2012
thanks
Thank you very very much!

Have a nice day, u surely made mine!

Oh and sorry for not using the code tags, i'll be sure to do that the next time.
# 4  
Old 05-25-2012
POSIX grep:
Code:
grep -Eo '([0-9]+\.){3}[0-9]+' infile

This User Gave Thanks to Scrutinizer For This Post:
AscaL
 
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