linux-sg2042/Documentation/ABI/testing/sysfs-tty

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What: /sys/class/tty/console/active
Date: Nov 2010
Contact: Kay Sievers <kay.sievers@vrfy.org>
Description:
Shows the list of currently configured
console devices, like 'tty1 ttyS0'.
The last entry in the file is the active
device connected to /dev/console.
The file supports poll() to detect virtual
console switches.
What: /sys/class/tty/tty0/active
Date: Nov 2010
Contact: Kay Sievers <kay.sievers@vrfy.org>
Description:
Shows the currently active virtual console
device, like 'tty1'.
The file supports poll() to detect virtual
console switches.