Programmer's Reference
The Common File System provides a set of low-level file protocols based on
the POSIX.1 standard. This includes standard protocols for the
following:
- Unbuffered input and output on file descriptors: open, close, read,
write, lseek, rewind, flush, and size.
- Searching directory entries: opendir, closedir, readdir, and
rewinddir
- Managing files and directories: chdir, getcwd, remove (unlink),
rename, mkdir, and rmdir
- Testing existence of files and directories, and obtaining file
statistics: stat
- File locking and sharing
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