Exercises

18.1	Write a program that calls tty_raw and terminates (without resetting the terminal mode). If your system provides the reset(1) command (all four systems described in this text do), use it to restore the terminal mode.
18.2	The PARODD flag in the c_cflag field allows us to specify even or odd parity. The BSD tip program, however, also allows the parity bit to be 0 or 1. How does it do this?
18.3	If your system's stty(1) command outputs the MIN and TIME values, do the following exercise. Log in to the system twice and start the vi editor from one login. Use the stty command from your other login to determine what values vi sets MIN and TIME to (since vi sets the terminal to noncanonical mode). (If you are running a windowing system on your terminal, you can do this same test by logging in once and using two separate windows instead.)