#!perl -w
use strict;
# use Regexp::Debugger;

for my $line (<DATA>) {
    while ( $line=~/<a href=\"(.*?)\.htm\">/ig ) {
        print "$1\n";
    };
}

__DATA__
<a href="test1.htm"> test1</a><br> <a href="test2.htm"> test2</a><br><a href="test3.htm"> test3</a><br> 

##</code><code>##

test1
test2
test3