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Subject: Re: Is it possible to sort a key field right to left
To: Ernie Luzar <luzar722@gmail.com>,
 "freebsd-questions@freebsd.org" <freebsd-questions@freebsd.org>
References: <59BA9B3C.5010106@gmail.com>
From: Arthur Chance <freebsd@qeng-ho.org>
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Date: Thu, 14 Sep 2017 16:09:38 +0100
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On 14/09/2017 16:07, Ernie Luzar wrote:
> I have a file containing a list of host domain names known to contain
> viruses.
> 
> I want to sort the host names from right to left so they are grouped
> together by like host name suffixes.
> 
> Is this possible?

Try this to see if it does what you want.

<infile rev | sort | rev >outfile

-- 
An amusing coincidence: log2(58) = 5.858 (to 0.0003% accuracy).