“POSIX"是什么意思? [英] What is the meaning of "POSIX"?

问题描述

什么是POSIX?我已经阅读了维基百科文章，每次遇到这个词我都会阅读.事实是我从来没有真正理解它是什么.

任何人都可以通过解释POSIX 的必要性"来向我解释吗?

解决方案

POSIX 是一个家庭由 IEEE 指定的标准，以阐明和统一应用程序编程接口(和辅助问题，例如命令行 shell 实用程序)由 Unix-y 操作系统提供.

当您编写依赖于 POSIX 标准的程序时，您可以肯定能够轻松地将它们移植到一大类 Unix 衍生产品(包括 Linux，但不仅限于 Linux！)；如果并且当您使用一些未作为 Posix 一部分标准化的 Linux API 时，如果您想在将来将该程序或库移植到其他 Unix-y 系统(例如 MacOSX)，您将会遇到困难.

What is POSIX? I have read the Wikipedia article and I read it every time I encounter the term. The fact is that I never really understood what it is.

Can anyone please explain it to me by explaining "the need for POSIX" too?

解决方案

POSIX is a family of standards, specified by the IEEE, to clarify and make uniform the application programming interfaces (and ancillary issues, such as commandline shell utilities) provided by Unix-y operating systems.

When you write your programs to rely on POSIX standards, you can be pretty sure to be able to port them easily among a large family of Unix derivatives (including Linux, but not limited to it!); if and when you use some Linux API that's not standardized as part of Posix, you will have a harder time if and when you want to port that program or library to other Unix-y systems (e.g., MacOSX) in the future.

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