what is /dev/vc ?
在Document/filesystems/proc.txt中: To see which tty's are currently in use, you can simply look into the file /proc/tty/drivers: 在我的机器上: $cat /proc/tty/drivers /dev/tty /dev/tty 5 0 system:/dev/tty /dev/console /dev/console 5 1 system:console /dev/ptmx /dev/ptmx 5 2 system /dev/vc/0 /dev/vc/0 4 0 system:vtmaster rfcomm /dev/rfcomm 216 0-255 serial ttyprintk /dev/ttyprintk 5 3 console serial /dev/ttyS 4 64-111 serial pty_slave ...