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

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

os.setgid(gid) Set the current process’ group id. Availability: Unix.

os.mkdir(path, mode=0o777, *, dir_fd=None) Create a directory named path with numeric mode mode.

os.spawnvp(mode, file, args) os.spawnvpe(mode, file, args, env) Execute the program path in a new process

os.startfile(path[, operation]) Start a file with its associated application. When operation

st_dev Identifier of the device on which this file resides.

window.overwrite(destwin[, sminrow, smincol, dminrow, dmincol, dmaxrow, dmaxcol]) Overwrite the window on top of destwin

os.lseek(fd, pos, how) Set the current position of file descriptor fd to position pos, modified by how: