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| Bash is the shell, or command language interpreter, for the GNU operating system. The name is an acronym for the 'Bourne-Again SHell', a pun on Stephen Bourne, the author of the direct ancestor of the current Unix shell sh, which appeared in the Seventh Edition Bell Labs Research version of Unix.
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| Bash是shell，或者，对于GUN操作系统而言它也叫做指令语言解释器。这个名字源于"Bourne-Again SHell"的首字母缩写，Stephen Bourne的双关语，其直接始祖源自当前Unix shell sh，它始现于贝尔实验室Unix的第七个版本。
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| Bash is largely compatible with sh and incorporates useful features from the Korn shell ksh and the C shell csh. It is intended to be a conformant implementation of the IEEE POSIX Shell and Tools portion of the IEEE POSIX specification (IEEE Standard 1003.1). It offers functional improvements over sh for both interactive and programming use.
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| Bash在很大程度上与sh是兼容的，并且它也从Korn shell ksh以及C shell csh纳入了一些有用的功能。它的目的是成为IEEE POSIX Shell的一致实现，以及IEEE POSIX规范（IEEE Standard 1003.1）的工具部分。他提供了sh针对交互及编程方面的功能改善。
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| While the GNU operating system provides other shells, including a version of csh, Bash is the default shell. Like other GNU software, Bash is quite portable. It currently runs on nearly every version of Unix and a few other operating systems - independently-supported ports exist for MS-DOS, OS/2, and Windows platforms.
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