The Korn shell conforms to the Portable Operating System Interface for Computer Environments (POSIX), which is an international standard for operating systems.
Korn shell 符合计算机环境的可移植操作系统接口标准 (POSIX)，这是操作系统的国际标准。
In theory, portable code should not rely on this example code fragment, however, as before, in practice it actually does work on most mainstream computer systems.
理论上，上面的代码不是可移植代码，虽然在大部分的计算机系统上都能正常运行。
A language whose source programs can compiled and run on wide variety of computer systems is said to be portable.
一个语言的源代码可以在多种计算机系统上编译和运行，那么这种语言称为可移植的。
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