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This article mainly introduces what POSIX Shell refers to. It has certain reference value and can be used for reference by friends who need it. I hope you will learn a lot after reading this article. Next, let the editor take you to learn about it.

What is POSIX Shell?

POSIX is an acronym for "Portable operating system Interface". POSIX shell is based on the standard defined in the Portable operating system Interface (POSIX)-IEEE P1003.2. It is a set of standards compiled by IEEE and promulgated by ANSI and ISO. POSIX makes the task of cross-platform software development easier. There are various versions of POSIX, but the most important are POSIX.1 and POSIX.2, which define system calls and command-line interfaces.

What is POSIX?

POSIX defines the application programming interface (API), as well as the Unix command line shell and utility interface. This ensures software compatibility with Unix and other operating systems. POSIX shell is implemented for many types of UNIX operating systems. The POSIX standard is designed for use by application programmers and system administrators. Most POSIX Shell functions are similar to Korn Shell.

The following operating systems are 100% compliant with various POSIX standards:

A/UXAIXHP-UXINTEGRITYIRIXOS XQNXSolarisTru64UnixWare

Please note that GNU/Linux (most distributions) and * BSD operating systems are not officially certified for POSIX compatibility, but are largely compliant.

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