Plasmodium falciparum is a protozoan parasite that causes an infectious disease known as malaria. P. falciparum is the most severe strain of the malaria species correlated with almost every malarial death. [1] The other 3 species that cause malaria include: P. vivax, P. ovale, and P. malariae.
To set the value of a Boolean attribute, such as disabled, you can specify any value. An empty string or the name of the attribute are recommended values. All that matters is that if the attribute is present at all, regardless of its actual value, its value is considered to be true.
But then, it will be accessible as any other file. If this is not an option for you (e.g. your file needs to be persistent): bad luck. There is no real hidden file in linux. You can hide your persistent files as secure as files on windows with the hidden attribute: prepend the name with a dot. As stated by others: ls-a will show them nevertheless.