//sys/class/tty/tty21/subsystem/tty0/subsystem/tty15/subsystem/tty8/subsystem/tty38/subsystem/tty5/subsystem/tty7/subsystem/tty21/subsystem/ttyS2/subsystem/tty29/subsystem/ttyS3/subsystem/tty16/subsystem/tty8/subsystem/tty34/subsystem/tty26/dev