Index of /sys/dev/char/21:4/

../
device/                                            21-Jun-2025 07:50                   -
power/                                             21-Jun-2025 07:52                   -
subsystem/                                         21-Jun-2025 07:52                   -
dev                                                21-Jun-2025 07:52                4096
uevent                                             21-Jun-2025 07:52                4096