Thanks Dennis, In my case there is no *gpio, *but *root* 2 times.
debian@beaglebone:~$ ls -l /sys/class/leds/ total 0 lrwxrwxrwx 1 root root 0 Jan 1 2000 beaglebone:green:usr0 -> ../../devices/platform/leds/leds/beaglebone:green:usr0 lrwxrwxrwx 1 root root 0 Jan 1 2000 beaglebone:green:usr1 -> ../../devices/platform/leds/leds/beaglebone:green:usr1 lrwxrwxrwx 1 root root 0 Jan 1 2000 beaglebone:green:usr2 -> ../../devices/platform/leds/leds/beaglebone:green:usr2 lrwxrwxrwx 1 root root 0 Jan 1 2000 beaglebone:green:usr3 -> ../../devices/platform/leds/leds/beaglebone:green:usr3 debian@beaglebone:~$ -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/1894e029-42a3-4929-9f1c-db8790d21a77o%40googlegroups.com.