//sys/class/tty/tty21/subsystem/tty0/subsystem/tty15/subsystem/tty19/subsystem/tty28/subsystem/tty33/subsystem/tty59/subsystem/tty2/subsystem/tty54/subsystem/ttyS0/subsystem/tty3/subsystem/tty21/subsystem/tty27/subsystem/ttyS2/subsystem/tty29/subsystem/tty32/subsystem/tty26/subsystem/tty34/subsystem/tty22/subsystem/tty46/dev