From: Louis J Scoras <louis.j.scoras@...>
Date: 2005-10-06T21:31:36+09:00
Subject: Re: One-liner removing duplicate lines

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> $ cat -n input | sort -k2 | uniq -f1 | sort | sed -e 's/^ *[0-9]*\t//' >
> output
>

Woops, that second sort needs an `-n` flag to sort numeric. Above will only
work if you have <10 lines.

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