文件系统操作函数:用于创建常规文件、目录和符号链接;复制和重命名文件;提供删除功能。
File system-manipulation functions: Meant to create regular files, directories, and symbolic links; copy and rename files; and provide for deletion.
这包括在代码中不同函数边界由操作系统实现的那些探测。
Those exposed by the operating system on the boundary of different functions within the code are covered.
清单6 . platform函数生成操作系统类型。
Listing 6. The platform function yields the type of operating system.
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