getcwd(buffer *Any, length Int) -> Int { return syscall(79, buffer, length) } chdir(path *Any) -> Int { return syscall(80, path) } rename(old *Any, new *Any) -> Int { return syscall(82, old, new) } mkdir(path *Any, mode Int) -> Int { return syscall(83, path, mode) } rmdir(path *Any) -> Int { return syscall(84, path) } unlink(file *Any) -> Int { return syscall(87, file) }