The infinitely profitable program

Raymond Wiker rwiker at
Sun Jul 3 01:25:24 CDT 2016

> On 03 Jul 2016, at 01:00 , Eric Smith <spacewar at> wrote:
> On Sat, Jul 2, 2016 at 11:29 AM, Eric Christopherson
> <echristopherson at> wrote:
>> Genius. But I would have thought CP/M would at least require a .com file to
>> have a header.
> Multiple people independently invented the zero-byte CP/M program,
> which is obviously the shortest possible useful computer program, but
> I'd never before heard of anyone succeeding, or even attempting, to
> sell the program.

I think the original implementation of /bin/true was a zero-length file, while /bin/false worked by not existing at all.

More information about the cctalk mailing list