Nice read, the part at the end "Finally, stty sane will restore your TTY device configuration to something reasonable" Realy should be what you learn from your fist instance of using a terminal (to many bad memorys of yesteryear systems over RS232 and uucp and modems, stop me now).<p>But everybody learns what they need to learn, even if it is setting the backspace/del keys to something visualy complient.<p>Knowing a tty and VT commands you can do some realy simple clever stuff, like find certain people logged in and there tty and cat append information to there screens and if they have terminals with extra sub lines you can sends a string that will memorise the screen cursor position, reposition cursor to the lower lines and display your text and then restore the cursor position. A very easy and simple way to instantly alert logged on users in certain groups. Can do all that in shell script easily. So knowing how things work and there capabilities and even there history and background so you understand why they are the way they are and from that appreciete there limitations. Then you can start doing some realy fun things. Again, nice read as verifys what you know and will fill in some worthy blanks.