Grrrrr the "solution" listed below is wrong. It removes adjacent duplicate lines. This is not what the requestor was asking. See the reponses from the other monks for a useful solution.

If you're on a Unix system you can just `uniq` the file. But if you must do it in Perl . . . 

my $lastline;
while(<>) {
 print if $lastline ne $_;
 $lastline = $_;
}

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Be Appropriate && Follow Your Curiosity

In reply to Re: duplicate lines by mikeraz
in thread duplicate lines by Anonymous Monk

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