From: Christian Neukirchen <chneukirchen@...>
Date: 2005-10-06T05:39:25+09:00
Subject: Re: One-liner removing duplicate lines

Damien Wyart <damien.wyart@free.fr> writes:

> Hello,
>
> Converting from Perl to Ruby, I am trying to find an equivalent to this
> Perl one-liner removing duplicate lines in a file (without sorting it at
> first) :
>
>    perl -ne'$s{$_}++||print' infile >outfile

     ruby -ne 'BEGIN{$s={}};$s[$_] ||= !puts($_)'

Not exactly nice, though.

> Many thanks in advance,

> Damien Wyart
-- 
Christian Neukirchen  <chneukirchen@gmail.com>  http://chneukirchen.org