#!/usr/bin/perl

# http://perlmonks.org/?node_id=1171814

use strict;
use warnings;

$_ = join '', <DATA>;

s/^.*cat.*\n.*dog.*\n//gm;

print;

__DATA__
dog
cat 
dog
dog
cat
goat

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In reply to Re: If line is followed by line, delete both lines by Anonymous Monk
in thread If line is followed by line, delete both lines by Ganesh Bharadwaj1

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