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IP2ASN unix script

 
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Old 11-06-2008
IP2ASN unix script
Hi guys,

I need a simple script that given an IP address, say IPA, do the following:

- queries "whois IPA"
- extracts, from the whois answer, the IP network string indicated after the string "route:",
- searches the IP network string in a given text file, say CIDR2ASN.txt, which has several lines, each line containing an IP network string and a number next (the ASN, autonomous system number indeed),
- gets the ASN and display it or save it into a file.

I know nothing about unix scripting... I suppose I should use grep and cat commands within a for cycle and/or a case nest, any suggestion?

Best,
Ste
Last edited by stesecci; 11-06-2008 at 10:21 AM..
 
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LEARN ABOUT CENTOS

whois.conf

WHOIS.CONF(5)							 Debian GNU/Linux						     WHOIS.CONF(5)

NAME

       whois.conf - alternative WHOIS servers list for whois client

SYNOPSIS

       /etc/whois.conf

DESCRIPTION

       This file contains a list of WHOIS servers which can augment or override the built-in list of the client.

       It's  a plain text file in ASCII encoding. Each line consists of two fields: a pattern to match WHOIS object identifier and a corresponding
       WHOIS server domain name.

       Fields are separated by non-empty sequence of space or a tabular characters.  A line starting with a hash character is a free  comment  and
       it's not considered.

       The  pattern is case-insensitive extended regular expression if whois client has been compiled with POSIX regular expressions support. Oth-
       erwise, simple case-insensitive suffix comparison against WHOIS object identifier is used.

       Internationalized domain names (IDN) must be specified in ascii-compatible encoding (ACE) format.

EXAMPLE

       .nz$		 nz.whois-servers.net
       # Hangul Korean TLD
       .xn--3e0b707e$	 whois.kr
       # Private ASNs
       ^as645(1[2-9]|2[0-9]|3[0-4])$	whois.example.net

FILES

       /etc/whois.conf

SEE ALSO

       whois(1)

AUTHOR

       This manual page was written by Petr Pisa <ppisar@redhat.com> and is licensed under the terms of the GNU General Public License, version  2
       or higher.

Petr Pisa							   9 April 2013 						     WHOIS.CONF(5)