Comments on: Linux / UNIX Shell: Sort IP Address

By: tc

tc — Tue, 14 Jun 2011 12:52:25 +0000

I have a text file of IP addresses that I’d like to sort, which might look something like this:

10.20.30.40 50 60.70.80.90 100
1.2.3.4 50 5.6.7.8 80
ab32::ff0:c23a 123 ff::ab12 80
192.168.1.1 80 123.45.67.89 123

I’d like to sort on the first column of IP addresses, then the third column of IP addresses. It doesn’t matter if IPv4 comes before IPv6 or vice versa.

This sort method seems to work only for a text file containing a single column of IPv4 addresses. It’s a tough problem. This is a start for me, and I’ll have to do some trial and error and reading of “man sort.” Any tips would be appreciated.

Thanks!

By: Kacak

Kacak — Thu, 14 Apr 2011 06:54:49 +0000

Thanks for the great sharing… I know this is for unix/linux machine, but i would appreciate if you could share something similar (to sort ip addresses) on windows OS as well.

Thanks

By: Vivek Umasuthan

Vivek Umasuthan — Tue, 24 Nov 2009 21:14:17 +0000

This was really useful. Thanks for the help.

By: Brad

Brad — Fri, 16 Oct 2009 19:57:26 +0000

You allude to sorting all columns in an IP address, but don’t specifically state how to.
Here’s the sort command to sort all IP addresses:
sort -t . -k 1,1n -k 2,2n -k 3,3n -k 4,4n /path/to/file

Also, since i’m here, i wanted then to reverse my IP addresses so i could build a reverse zone file for DNS. I found an easy way:
IP=10.120.19.18
IP=(${IP//./ })
Rev=${IP[3]}.${IP[2]}.${IP[1]}.${IP[0]}
echo $Rev

Thanks to you and your sort command for getting me started.

By: Raymond

Raymond — Wed, 17 Sep 2008 15:01:28 +0000

I’ve been follow your site 6 months, faq section is always very informative. keep up your good work..

By: Vaishnavi

Vaishnavi — Wed, 17 Sep 2008 10:20:45 +0000

A very good example. Your site is amazing and I look forward to your posts all the time :)