[root@dns325]# ls -l /tmp/sys/
total 12
-rw-r--r-- 1 root root 5 Aug 21 18:35 fan1_input
lrwxrwxrwx 1 root root 33 Jan 1 1970 left_led -> /sys/class/leds/dns320l:red:sata0
lrwxrwxrwx 1 root root 28 Jan 1 1970 power_button -> /sys/class/gpio/gpio29/value
drwxr-xr-x 2 root root 80 Jan 1 1970 power_led
-rw-r--r-- 1 root root 4 Aug 21 18:35 pwm1
lrwxrwxrwx 1 root root 33 Jan 1 1970 right_led -> /sys/class/leds/dns320l:red:sata1
-rw-r--r-- 1 root root 6 Aug 21 18:38 temp1_input
lrwxrwxrwx 1 root root 32 Jan 1 1970 usb2_led -> /sys/class/leds/dns320l:blue:usb
lrwxrwxrwx 1 root root 34 Jan 1 1970 usb_led -> /sys/class/leds/dns320l:orange:usb
Regards