Try the cat example again with your tty in raw mode instead of cooked mode. (stty raw) Note that your job control characters will no longer function, so you w

Try the cat example again with your tty in raw mode instead of cooked mode. (stty raw) Note that your job control characters will no longer function, so you will need to kill the cat command from a different terminal, then type: stty sane (or stty cooked) to restore your terminal to "normal" operation. You will then see the 0d hex carriage return characters in the /tmp/anonymousiam file, and no 0a hex linefeed characters present.