Hi, These are character devices for I/O. /dev/tty0 is a special device, representing the current terminal. /dev/tty1 is the first virtual terminal, /dev/tty1 is second virtual terminal (usually there are 6 virtual terminals). The other /dev/tty* are for other purposes. Regards, Rami Rosen http://ramirose.wix.com/ramirosen On Wed, Nov 28, 2012 at 12:11 PM, horse_rivers <horse_rivers@126.com> wrote:

hi：

I find in /dev/ file folder ,there are many tty* ， which is like tty0,ty1,tty7,tty9,and son on.

I do not know what is this ?

my computer may not have so many device

thanks!

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