Definition of Daemon

daemon
<operating system> /day'mn/ or /dee'mn/ (From the mythological meaning, later rationalised as the acronym "Disk And Execution MONitor") A program that is not invoked explicitly, but lies dormant waiting for some condition(s) to occur. The idea is that the perpetrator of the condition need not be aware that a daemon is lurking (though often a program will commit an action only because it knows that it will implicitly invoke a daemon).
For example, under ITS writing a file on the LPT spooler's directory would invoke the spooling daemon, which would then print the file. The advantage is that programs wanting files printed need neither compete for access to, nor understand any idiosyncrasies of, the LPT. They simply enter their implicit requests and let the daemon decide what to do with them. Daemons are usually spawned automatically by the system, and may either live forever or be regenerated at intervals.
Unix systems run many daemons, chiefly to handle requests for services from other hosts on a network. Most of these are now started as required by a single real daemon, inetd, rather than running continuously. Examples are cron (local timed command execution), rshd (remote command execution), rlogind and telnetd (remote login), ftpd, nfsd (file transfer), lpd (printing).
Daemon and demon are often used interchangeably, but seem to have distinct connotations (see demon). The term "daemon" was introduced to computing by CTSS people (who pronounced it /dee'mon/) and used it to refer to what ITS called a dragon.
[Jargon File]
(1995-05-11)

daemon
/day'mn/ or /dee'mn/ n. [from the mythological meaning, later rationalized as the acronym `Disk And Execution MONitor'] A program that is not invoked explicitly, but lies dormant waiting for some condition(s) to occur. The idea is that the perpetrator of the condition need not be aware that a daemon is lurking (though often a program will commit an action only because it knows that it will implicitly invoke a daemon). For example, under ITS writing a file on the LPT spooler's directory would invoke the spooling daemon, which would then print the file. The advantage is that programs wanting (in this example) files printed need neither compete for access to nor understand any idiosyncrasies of the LPT. They simply enter their implicit requests and let the daemon decide what to do with them. Daemons are usually spawned automatically by the system, and may either live forever or be regenerated at intervals.

Daemon and demon are often used interchangeably, but seem to have distinct connotations. The term `daemon' was introduced to computing by CTSS people (who pronounced it /dee'mon/) and used it to refer to what ITS called a dragon; the prototype was a program called DAEMON that automatically made tape backups of the file system. Although the meaning and the pronunciation have drifted, we think this glossary reflects current (2000) usage.

daemon
Disk And Execution MONitor

Ur-Daemon
n. Powerful beings from another plane which invaded Elanthia in a far distant age. Little is known of them, save that they were powerful and fearsome. Much of the "darker" magic of Elanthia is said to be a remnant of something the Ur-Daemons left behind.
Also see: The Ur-Daemon War

Daemon
A dormant background process on a Web server  (in a UNIX  environment), waiting to perform tasks. Well-known daemons are the sendmail daemon and the HTTP  daemon.

Daemon
Disk And Execution MONitor programs that are not initially executed but lie in wait for certain contingencies to occur. Daemons are extremely common in UNIX operating systems.The slightly revised form Demon refers to the program itself whereas Daemon refers to an operating system process. See also HTTPd .

Daemon
Pronounced demon or damon, a process that runs in the background and performs a specified operation at predefined times or in response to certain events. The term daemon is a UNIX term, though many other operating systems provide support for daemons, though they're sometimes called other names. Windows, for example, refers to daemons and System Agents and services.

Typical daemon processes include print spoolers, e-mail handlers, and other programs that perform administrative tasks for the operating system. The term comes from Greek mythology, where daemons were guardian spirits.

DAEMON
A program that runs in the background whenever needed,carring out tasks for the users.They sleep’ until something comes along which needs their help;most commonly found on unix systems.

Daemon
(a.)
Alt. of Daemonic
  

daemon

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Noun
1. one of the evil spirits of traditional Jewish and Christian belief
(synonym) devil, fiend, demon, daimon
(hypernym) evil spirit
(hyponym) incubus
2. a person who is part mortal and part god
(synonym) demigod
(hypernym) deity, divinity, god, immortal
(hyponym) Adonis

daemon

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daemon
n
1. one of the evil spirits of traditional jewish and christian belief [syn: devil, fiend, demon, daimon]


2. a person who is part mortal and part god [syn: demigod]


daemon
the greek form, rendered "devil" in the authorized version of the new testament. daemons are spoken of as spiritual beings (matt. 8:16; 10:1; 12:43-45) at enmity with god, and as having a certain power over man (james 2:19; rev. 16:14). they recognize our lord as the son of god (matt. 8:20; luke 4:41). they belong to the number of those angels that "kept not their first estate," "unclean spirits," "fallen angels," the angels of the devil (matt. 25:41; rev. 12:7-9). they are the "principalities and powers" against which we must "wrestle" (eph. 6:12).

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daemon
N M
spirit| supernatural being| intermediary between man and god; evil demon/devil

Daemon
Daemon or Demon [from Greek daimon, Latin daemon] A god, angel, or celestial power or spirit, of varying degrees of ethereality, and ranging from the supreme deity of the hierarchy, through the greater gods, down to mere genii and lemures. Originally the term applied to deity in general, but later it usually was referred to beings intermediate between the gods and mankind, representing the powers and functions of gods. The Greeks and Romans sometimes used the term for the human divine egos. Philsophers such as Plato divided the daemons into three classes, "the first two are invisible; their bodies are pure ether and fire (Planetary Spirits); the Daimons of the third class are clothed with vapoury bodies; they are usually invisible, but sometimes, making themselves concrete, become visible for a few seconds. These are the earthly spirits, or our astral souls" (BCW 6:187).
The daemon of Socrates stood for his higher and spiritual self, and parallels in this sense the Christian idea of the Guardian Angel. Hesiod designated them as spirits of the golden age appointed to watch over and guard mankind. We often find two daemones accompanying the individual, one prompting to good, the other to evil; while again it may be the same genius, whose influence is defined as at one time good, at another evil.
to be continue "Daemon2 "

Daemon
the Greek form, rendered "devil" in the Authorized Version of the New Testament. Daemons are spoken of as spiritual beings (Matt. 8:16; 10:1; 12:43-45) at enmity with God, and as having a certain power over man (James 2:19; Rev. 16:14). They recognize our Lord as the Son of God (Matt. 8:20; Luke 4:41). They belong to the number of those angels that "kept not their first estate," "unclean spirits," "fallen angels," the angels of the devil (Matt. 25:41; Rev. 12:7-9). They are the "principalities and powers" against which we must "wrestle" (Eph. 6:12).

Daemon
A Greek word for spirit.

Demonophobia
Demonophobia or - Fear of demons
Also known as Daemonophobia

Daemon

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