Well, thats pretty recursive, I guess.
pi@raspberrypi:~ $ cat /sys/class/gpio/gpiochip0/device/gpio/gpiochip0/device/gpio/gpiochip0/device/gpio/gpiochip0/device/gpio/gpiochip0/
base device/ label ngpio power/ subsystem/ uevent
And you can go on, and on, and on like that.
What's wrong with you RaspberryPi?
It's a fresh raspbian installierbar, with the only Addition of 1wire and snmp.
I'd expect /sys/class/gpio/gpio<pinnumber>/value there.
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