| 翻訳と辞書 |
Lp (Unix)
The lp system was the print system provided by the UNIX System V family of operating systems. It was similar in functionality to the Berkeley Software Distribution-based lpr system, and has been supplanted by the LPRng and CUPS systems. ''lp'' was also the name of the command used to move documents into the print ''spool'', or queue. Like similarly-named commands on ITS, DEC, CP/M, and 86-DOS, it was originally an acronym for terms like line print(er) and local print(er). However, the commands stopped being specific to particular devices in the 1980s, and today are used with any printer compatible with the operating system itself.
==Background==
In the Unix programming model, devices such as printers are represented as just another file in the filesystem. For example, the first line printer on a system might be represented by a file "lp1" in the device ("dev") directory, ''i.e.'' /dev/lp1. Using the file metaphor, a document could by printed by "copying" the file onto the device: cp document /dev/lp1. While this worked well enough for the case where there was one printer per user, this model did not scale out well to multiple users having to share one printer.〔 The solution was to create a queue (or spool) of documents to be printed and allow a system daemon to print the documents in the order in which they arrived.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
■ウィキペディアで「Lp (Unix)」の詳細全文を読む
スポンサード リンク
| 翻訳と辞書 : 翻訳のためのインターネットリソース |
Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.
|
|