From: Jeremy Kemper <jeremy@...>
Date: 2005-10-06T11:18:06+09:00
Subject: Re: One-liner removing duplicate lines

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On Oct 5, 2005, at 7:11 PM, William James wrote:
> Damien Wyart wrote:
>> 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
>>
>
> awk '!a[$0]++' infile >outfile

My head a splode.  Old school.

Regards,
jeremy
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