# Operating System

The interfaces in this section provide access to operating system facilities: timekeeping, files, pathnames, directories, and processes. The interfaces are intended to be implementable at least on POSIX [POSIX] and Win32 [Win32] systems.

- The Time interface
- The Date interface
- The Tick interface
- The OSError interface
- The File interface
- The Pipe interface
- The Terminal interface
- The RegularFile interface
- The Pathname interface
- The FS interface
- The Process interface
- The Params interface
- The Env interface