Chapter 19. Pseudo Terminals

	Example	Relevant Functions
19.1	ptym_open, ptys_open pseudo tty open routines master/slave. SVR4 version	strcpy, open, close, grantpt, unlockpt, ptsname, ioctl
19.2	ptym_open, ptys_open pseudo tty open routines master/slave. 4.3BSD/SunOs version.	strcpy, open, close, getgrnam, chown, chmod
19.3	pty_fork Combines the open of the master+slave pty with a call to fork, establishing the child as a session leader with a controlling terminal. Works under both SVR4 and 4.3BSD/SunOs.	err_sys (Stevens' lib), ptym_open, ptys_open, fork, setsid, close, ioctl, strcpy, tcsetattr, dup2
19.4	The pty program Run an arbitrary program under a pty. The program "thinks" it is running connected to a terminal. Usage:   pty prog args...	isatty, tcgetattr, tcsetattr, getopt, optarg, optind, opterr, err_quit (Stevens' lib), err_sys (Stevens' lib), pty_fork (Stevens' func), tty_raw (Stevens' lib), ioctl, execvp, fprintf, atexit, exit, do_driver (Stevens' func), loop (Stevens' func)
19.5	loop main loop of pty program Copy stdin to the pty master and data received from pty master to stdout	fork, getpid, kill, exit, err_sys (Stevens' lib), read, writen (Stevens' lib), signal_intr (Stevens' lib)
19.6	do_driver Connect a driver program to the pty program to drive the process under the pty with some logic (e.g. like expect). Used with      pty -d driverprog program args...	s_pipe, err_sys (Stevens' lib), fork, close, dup2, execlp,