use strict;
use warnings;
use DB_File;

my $hashfile = "hash.$$";
tie my %hash1, "DB_File", $hashfile, O_RDWR|O_CREAT, 0666, $DB_HASH
    or die "cannot open file $hashfile: $!";


open(my $fh1, "<", "file1.txt") or die "file1.txt: $!";
foreach (<$fh1>) {
    chomp;
    my @parts = split(/\s+/);
    $hash1{"$parts[1]#$parts[2]"} = $parts[4];
}
close($fh1);


open(my $fh2, "<", "file2.txt") or die "file2.txt: $!";
foreach (<$fh2>) {
    my @parts = split(/[\s>]+/);
    my $value = $hash1{"$parts[0]#$parts[1]"};
    if( defined($value) and grep { $_ eq $parts[2] } split(/\//, $value)) {
        print "$_";
    }
}
close($fh2);


untie %hash1;
unlink($hashfile);