Sudarshan Raghavan wrote:
> 
> On Wed, 2 Oct 2002, jontn_swift wrote:
> 
> > This is a classic case for my favorite one-liner:
> >
> > perl -e'while(<>){print unless $seen{$_}++}' <infile >outfile
> 
> You favourite one-liner can be even shorter
> perl -n -e 'print unless $seen{$_}++' infile >outfile

You want short?  :-)

  perl -ne'$s{$_}++||print' infile >outfile


John
-- 
use Perl;
program
fulfillment

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