//sys/class/tty/tty21/subsystem/tty57/subsystem/tty5/subsystem/ptmx/subsystem/ptmx/subsystem/tty18/subsystem/tty25/subsystem/ttyS0/subsystem/tty55/subsystem/tty1/subsystem/tty9/subsystem/tty8/subsystem/tty8/subsystem/tty31/subsystem/tty27/subsystem/tty48/subsystem/tty56/subsystem/tty33/subsystem/tty27/subsystem/tty35/subsystem/tty51/dev