use strict;
use warnings;

my $file1 = \<<"END1";
he is man
don't you
what goes on
END1

my $file2 = \<<"END2";
he is
what are
try to do
END2


open  my $h2, '<', $file2 or die "cannot open file2";
my @a2 = <$h2>;
close $h2;
chomp @a2;
my $match = join '|', @a2;
$match = qr/$match/;

open  my $h1, '<', $file1 or die "cannot open file1";
my @a1 = <$h1>;
close $h1;

print  grep {$_ =~ $match} @a1;

##</code><code>##

he is man