It is found, theoretically, that using different number density distributions of luminescent molecules within the PC, one can probe the partial information or even all of the total DOS in the PC.

This paper presents a real-time and multi-task processing system developed on IBM PC-DOS (or MS-DOS) which is a single user and single-task operating system.

For your level of PC knowledge it is not only impractical, but dangerous to try to get rid of the computer virus by those complicated DOS commands.