os.sched_rr_get_interval(pid) Return the round-robin quantum in seconds for the process with PID pid. A pid

os.posix_fallocate(fd, offset, len) Ensures that enough disk space is allocated for the file specified by fd starting

st_ino Inode number.

curses.delay_output(ms) Insert an ms millisecond pause in output.

curses.beep() Emit a short attention sound.

os.pwrite(fd, str, offset) Write bytestring to a file descriptor, fd, from offset, leaving the file

os.wait() Wait for completion of a child process, and return a tuple containing its pid and exit status indication: a 16-bit

st_flags User defined flags for file.

platform.system() Returns the system/OS name, e.g. 'Linux', 'Windows', or 'Java'. An

readinto1(b) Read bytes into a pre-allocated, writable bytes-like object b,