Thank you so much for replying so fast and hitting all my pain points. This is exactly what I was looking for

    $value = join ":", split " ", $value; # This is awesome
    $hash{$key} .= ", " if exists $hash{$key}; # I was thinking more i
+n lines of a ternary op but this is short and concise too
    $hash{$key} .= $value;
}

print "$_ $hash{$_}\n" for sort keys %hash; # I definitely like this a
+pproach
[download]

Thank you once again!