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楼主 |
发表于 2008-2-20 23:20:04
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Post by zhllg;1818265
meta是元的意思,初始的,本源的
不只是Linux,英语学到一定程度后,肯定会遇到这个单词,或者说单词前缀
这一段来自 http://en.wikipedia.org/wiki/Meta
In epistemology, the prefix meta- is used to mean about (its own category). For example, metadata are data about data (who has produced them, when, what format the data are in and so on). Similarly, metamemory in psychology means an individual's knowledge about whether or not they would remember something if they concentrated on recalling it. Furthermore, metaemotion in psychology means an individual's emotion about his/her own basic emotion, or somebody else's basic emotion.
也就是说meta-foo是有关foo的foo
比如metadata是有关数据的数据,比如记录数据的存储位置,存储时间的数据。文件系统刚创建好之后会发现分区的空间已经被使用了一些,但实际上并没有文件在分区里。那些空间就是被元数据占用的,比如给superblock,给inode预留的空间,journal等等。
好, 学习了。谢谢! |
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