《Operating System Concepts》学习第 46 天,p528-p544 总结,总计 17 页。
一、技术总结
1.file
(1)定义
The smallest logical storage unit; a collection of related information defined by its creator.
(2)file attributes
一般来说,包含 name, identifier, type, location, size, protection, timestamps and user identification。
(3)access methods
1)sequential access
2)direct access
2.directory
(1)structure of a dictory
single-level directory,two-level directory,tree-structure directory,acyclic-graph directory。
二、英语总结(生词:1)
1.allotment
(1)allot: ad-("to") + lot("portion(比例), share(份额)")
vt. divide or distribute as by lots(分配)。
(2)allotment
c/u. the acting of allot.
(3)示例
From a user’s perspective, a file is the smallest allotment of logical secondary storage; that is, data cannot be written to secondary storage unless they are within a file(《Operating System Concepts》第 530 页)。
关于英语的注解同步更新汇总到 https://github.com/codists/English-In-CS-Books 仓库。
三、其它
今天没有什么想说的。
四、参考资料
1. 编程
(1) Abraham Silberschatz,Peter Baer Galvin,Greg Gagne《Operating System Concepts》:https://book.douban.com/subject/30272539/
2. 英语
(1) Etymology Dictionary:https://www.etymonline.com
(2) Cambridge Dictionary:https://dictionary.cambridge.org
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