daemonn.

Brit.

/ˈdiːmən/, U.S.

/ˈdim(ə)n/

Forms: 1900s– daemon, 1900s– demon.

Origin: Probably a variant or alteration of another lexical item. Etymon: demon n.

Etymology: Probably an extended use of demon n. (see forms s.v.), but also interpreted as an acronym < the initial letters of either disk and execution monitor or device monitor.

Computing.

A program (or part of a program), esp. within a Unix system, which runs in the background without intervention by the user, either continuously or only when automatically activated by a particular event or condition.A distinction is sometimes made between the form daemon, referring to a program on an operating system, and demon, referring to a portion of a program, but the forms seem generally to be used interchangeably, daemon being more usual.

ΚΠ

1971 A. Bhushan Request for Comments (Network Working Group) (Electronic text) No. 114. 2 The cooperating processes may be ‘daemon’ processes which ‘listen’ to agreed-upon sockets, and follow the initial connection protocol.

1983 E. S. Raymond Hacker's Dict. 53 The printer daemon is just a program that is always running; it checks the special directory periodically, and whenever it finds a file there it prints it and then deletes it.

1989 DesignCenter ii. 41/3 The file server runs a standard set of HP-UX system and network daemons.

1992 New Scientist 18 Jan. 35/2 These programs, which could recognise simple patterns, were made up of several independent information-processing units, or ‘demons’, and a ‘master demon’.

2002 N.Y. Times 7 Mar. d4/5 A mailer daemon installed on an e-mail system can respond to a piece of incorrectly addressed e-mail by generating an automated message to the sender that the message was undeliverable.

This is a new entry (OED Third Edition, June 2005; most recently modified version published online March 2022).

单词	daemon
释义	daemonn. Brit. /ˈdiːmən/, U.S. /ˈdim(ə)n/ Forms: 1900s– daemon, 1900s– demon. Origin: Probably a variant or alteration of another lexical item. Etymon: demon n. Etymology: Probably an extended use of demon n. (see forms s.v.), but also interpreted as an acronym < the initial letters of either disk and execution monitor or device monitor. Computing. A program (or part of a program), esp. within a Unix system, which runs in the background without intervention by the user, either continuously or only when automatically activated by a particular event or condition.A distinction is sometimes made between the form daemon, referring to a program on an operating system, and demon, referring to a portion of a program, but the forms seem generally to be used interchangeably, daemon being more usual. ΚΠ 1971 A. Bhushan Request for Comments (Network Working Group) (Electronic text) No. 114. 2 The cooperating processes may be ‘daemon’ processes which ‘listen’ to agreed-upon sockets, and follow the initial connection protocol. 1983 E. S. Raymond Hacker's Dict. 53 The printer daemon is just a program that is always running; it checks the special directory periodically, and whenever it finds a file there it prints it and then deletes it. 1989 DesignCenter ii. 41/3 The file server runs a standard set of HP-UX system and network daemons. 1992 New Scientist 18 Jan. 35/2 These programs, which could recognise simple patterns, were made up of several independent information-processing units, or ‘demons’, and a ‘master demon’. 2002 N.Y. Times 7 Mar. d4/5 A mailer daemon installed on an e-mail system can respond to a piece of incorrectly addressed e-mail by generating an automated message to the sender that the message was undeliverable. This is a new entry (OED Third Edition, June 2005; most recently modified version published online March 2022). < n.1971
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