open (FILE,"$tempfile5") || die "Cannot read from $tempfile5\n";
my %hsh;

open (OUTF,">$tempfile6") || die "Cannot write to $tempfile6\n";
my @lines = <FILE>;
	
undef @hsh{@lines};
my @lines2 = keys %hsh;
	
	
foreach my $instance (@lines2)
{
   print OUTF $instance;
}

close FILE;
close OUTF;