On 12/04/13 16:13, poma wrote:
less syslog.txt | grep "DST=17\." does that and solves my immediate need.
A long list - a two IP addresses!? :)
Well, if you don't need this *short* IP addresses output .i.e. for a
'whois'[1] so you can parse the required IP range i.e. for a net filter,
nonetheless can serve as a textbook example of how to use awk and other
tools mentioned - for a general public. ;)
Have a nice weekend!
poma
I am filtering "syslog.txt" which has about a thousand lines of data for
DST=17.* And yes I use whois to identify the numeric address'.
[1]
whois 17.171.4.13 | grep "CIDR\|NetRange"
NetRange: 17.0.0.0 - 17.255.255.255
CIDR: 17.0.0.0/8
whois 174.35.3.56 | grep "CIDR\|NetRange"
NetRange: 174.35.0.0 - 174.35.127.255
CIDR: 174.35.0.0/17
That helps though, e.g.:
[bobg@box10 Downloads]$ whois 199.47.216.179 | grep "CIDR\|NetRange"
NetRange: 199.47.216.0 - 199.47.219.255
CIDR: 199.47.216.0/22
Dropbox.com, another address of interest. She stores image files there.
Bob
--
http://www.qrz.com/db/W2BOD
box10 Fedora-18 XFCE Linux
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