use strict;

my $find = qr/^(?:H0|HT)/;

	open (NEW, ">", "OUTPUT.txt" ) or die "could not open:$!";

	open (FILE, "<", "INPUT.txt") or die "could not open:$!";

		while (<FILE>) {
		print NEW if (/^\s{32}\S\s$find/);
	}
close (FILE);
close (NEW);

##</code><code>##

NAME                           PT #          AT        

DOE                            HT00000000    I
DOE                            HT00000000    S
DOE                            HT00000000    I
SMITH                          HT00000000    M
DOE                            HT00000000    I
DOE                            HT00000000    I
DOE                            H000000000    I
DOE                            H000000000    O
SMITH                          H000000000    I

##</code><code>##

HT00000000    I
HT00000000    S
HT00000000    I
HT00000000    M
HT00000000    I
HT00000000    I
H000000000    I
H000000000    O
H000000000    I