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Origin of 'Daemon' in Computing

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Re: Origin of 'Daemon' in Computing

#81
post #29

The *nix world is full of dark-but-fun terminology. Daemons run the system. New files get 666 (before the umask takes away unnecessary permissions). Parents kill their children before killing themselves. And sometimes you have to kill zombies.

From: https://devrant.com/rants/1101391/my-daily-unix-command-list... unzip; strip; touch; finger; mount; fsck; more; yes; unmount; sleep.

Tail/head

It’s almost like these commands were all made by nerd teenage boys.

Re: Origin of 'Daemon' in Computing

#82

The *nix world is full of dark-but-fun terminology. Daemons run the system. New files get 666 (before the umask takes away unnecessary permissions). Parents kill their children before killing themselves. And sometimes you have to kill zombies.

Zombies can't be killed for they are already dead; they can only be reaped, by waiting on them. (This is why init inherits orphans, so it may reap them when they eventually die.)

Re: Origin of 'Daemon' in Computing

#83
post #69

Earlier quoted context omitted.

I told my eight year old the “we taught sand how to think” joke, and he loved it, and also indulged me in a brief explanation. It really is absolutely wild that it all works when you go to the absolute fundamentals and start working forward.

The funny thing is that before that we taught light bulbs how to think(thermionic logic), and before that we taught magnets how to think(relay logic) and before that we taught levers how to think(gear logic)

It’s magic all the way down.

Re: Origin of 'Daemon' in Computing

#84
I find the “a la mode” vs “au jus” discussion right under the daemon one very interesting!

I wasn’t familiar with both of these expressions but I looked it up and “a la mode” is an American culinary expression, meaning “served with ice cream”. And “au jus” is also an American culinary expression, meaning “gravy” or “broth”. Now, even though they are both derived from a French expression that is a prepositional phrase with à (meaning with), it does not matter any more when they were borrowed to English.

“A la mode” became a new adverbial expression meaning just that: “served with ice cream”. You can have pie a la mode = pie served with ice cream, but obviously not *pie with a la mode = pie with served with ice cream.

And “au jus” became a noun expression meaning “broth” or “gravy”. And you must say sandwich with au jus = sandwich with gravy and can’t say *sandwich au jus = sandwich gravy.

What is extremely interesting here is that it bothers the prescriptivist who wants language to be a certain way he feels it is supposed to be, also the author on that webpage.

Re: Origin of 'Daemon' in Computing

#85
post #37

Do you pronounce it as demon or like Matt Damon?

It should more properly be written as dæmon. The æ ("ash") character is usually pronounced more like "ee", as in encyclopædia. I've never heard anyone say "encycloPAYdia" :-)

The original pronunciation of ae/æ in words originating from Latin or Greek is basically like "I". As usual, English molded it into something else in many cases, which is why we write "demon" these days. But if you insist of "daemon", then it really ought to be pronounced like the original Greek δαίμων.

Re: Origin of 'Daemon' in Computing

#86
post #56
post #37

Earlier quoted context omitted.

It should more properly be written as dæmon. The æ ("ash") character is usually pronounced more like "ee", as in encyclopædia. I've never heard anyone say "encycloPAYdia" :-)

Fascinating! This is why I stick with nice, clean structural linguistics, this applied stuff gets sticky. I just confirmed on Youtube that the (some?) British people do indeed pronounce "Aesthetic" as "ah-stet-ic" not "ee-stet-ic", and upon diving a bit, it seems that the rule is "don't ask for a rule, you fool! It's 'e' now except for when it isn't." Thanks for the interesting tidbit! The letter æ was used in Old En…

The letter "æ" as used in Old English does indeed correspond to /æ/, but we don't use that letter (or even digraph) for this purpose anymore. In all the words where it is still occasionally used, it corresponds not to Old English "æ", but to Latin "ae", which is [ae̯].

Re: Origin of 'Daemon' in Computing

#87
I recall reading a mail exchange posted on some usenet group about, IIRC, some boss or similar higher-up being shocked to discover the UNIX systems they ran were full of demons, and as a devout christian wanted the sysadmin to put an end to that immediately. The sysadmin was repeatedly trying to explain that a daemon was not the same as a demon, without success.

Tried to find the post again, but no dice :(

Re: Origin of 'Daemon' in Computing

#88
post #53
post #29

Earlier quoted context omitted.

From: https://devrant.com/rants/1101391/my-daily-unix-command-list... unzip; strip; touch; finger; mount; fsck; more; yes; unmount; sleep.

Except you shouldn’t fsck while mounted.

Works fine in FreeBSD/ufs :p

Re: Origin of 'Daemon' in Computing

#89
post #9
post #5

Unrelated to the word "daemon", but related to the article, I was a bit surprised by this assertion: > Eventually, though, the theory of quantum mechanics showed why it wouldn't work. I was familiar with the information theory arguments (the same presented in Wikipedia[1]). Is that why they mean here by "quantum mechanics" or is there another counterargument to Maxwell's daemon? 1: https://en.m.wikipedia.org/wiki/Max…

I'm guessing that the daemon's ability to allow only fast molecules through the gate depends on knowing their position and velocity simultaneously?

Yes, exactly, and this is what allows quantification.

http://www.av8n.com/physics/thermo/entropy-more.html#sec-pha...

With 'entropy' being an obsolete term for (lack of) information, and

> “classical thermodynamics” is a contradiction in terms.

Re: Origin of 'Daemon' in Computing

#90

I find the “a la mode” vs “au jus” discussion right under the daemon one very interesting! I wasn’t familiar with both of these expressions but I looked it up and “a la mode” is an American culinary expression, meaning “served with ice cream”. And “au jus” is also an American culinary expression, meaning “gravy” or “broth”. Now, even though they are both derived from a French expression that is a prepositional phrase…

Yeah, I was hanging out with someone recently who kept using "au jus" like "sauce", i.e. "you could make that with an au jus" , "ooh yeah that would be so good with an au jus on the side!" or similar ...
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