use strict;
use warnings;
my %href;
my $fn = <>;
open(FH, "$fn") || die "Cannot open file";

while (<FH>) {
        chomp($_);
        $href{$1} = $2 if $_ =~ /(\S+)\s+(\S+)/;
}

while (my ($key, $value) = each(%href)) {
        print $key. ", ". $value."\n";
}