On Tue, Mar 20, 2018 at 2:24 PM, Bakul Shah <bakul@bitblocks.com> wrote:

On Tue, 20 Mar 2018 14:04:38 -0400 Dan Cross <crossd@gmail.com> wrote:
Dan Cross writes:
>
> On Tue, Mar 20, 2018 at 1:56 PM, George Michaelson <ggm@algebras.org> wrote:
>
> I think daemon/demon came from printers demon, which is carved into
> > the government printing office in Brisbane. the printers demon is the
> > one which stuffed up letters in the tray, to make printers tear their
> > hair out. Did I say tray? I meant case, upper case, the one above,
> > with the big letters, and lower case, the case with the little
> > letters. oh dear. really? is that why they are cases?
> >
>
> While this story (and the others I trimmed for brevity) is (are) great,
> "daemon" is actually from the Greek, I believe: an intermediary between
> humans (users) and the gods (the kernel).

From http://ei.cs.vt.edu/~history/Daemon.html

Fernando J. Corbato: ... Our use of the word daemon (@
Project MAC in 1963) was inspired by the Maxwell's daemon of
physics and thermodynamics. (My background is Physics.)
Maxwell's daemon was an imaginary agent which helped sort
molecules of different speeds and worked tirelessly in the
background. We fancifully began to use the word daemon to
describe background processes which worked tirelessly to

perform system chores.

Right -- that is what I was under the impression from where the term came for computer use. Although, I was also under the impression that Maxwell had taken the term from ideas from some his Cambridge colleagues that were working on human thought and described the ideas of these daemons running around in your head supporting things like vision, hearing and your other senses. The later was formalized I believe years later by Oliver Suthridge (IIRC my Cog Psych of many years ago) - into the something like the Pandemonium model of cognition.

i.e. I think the term was used first in Cognition, then to Physics and finally to Computers.

As for Paul's comment about the daemons. Yes, Kirk McKusick who actually drew the original BSD daemon with purple sneakers, was wearing the infamous blue tee with said logo out walking on the street, as one someone else in the party (maybe Sam Leffler) sporting a 10 anniversary USENIX shirt in San Antonio many years ago, which has the daemons shown top of a PDP-11 with pipes, the null device, et al. He has quite a tale of the experience.

Clem