WRT1200AC how to turn of LED

Hi all, i owned a linksys WRT1200AC flashed OpenWrt 18.06.2. It run quite smooth, just one question bothering me, i would like to completely disable all LEDs for some reasons.

i have followed the instruction here:


but all LEDs still blinking as nothing changed.

thro putty /sys/class/leds, gave follows:
caiman:white:power
caiman:white:sata
pca963x:0:68:10
pca963x:0:68:11
pca963x:0:68:12
pca963x:0:68:13
pca963x:0:68:14
pca963x:0:68:15
pca963x:0:68:4
pca963x:caiman:amber:wan
pca963x:caiman:amber:wps
pca963x:caiman:white:usb2
pca963x:caiman:white:usb3_1
pca963x:caiman:white:usb3_2
pca963x:caiman:white:wan
pca963x:caiman:white:wlan_2g
pca963x:caiman:white:wlan_5g
pca963x:caiman:white:wps

will there be some command that i can check if changes have been made?
thx in advance.

For example after setting the trigger to none with the command echo none > trigger

run the command

cat trigger
[none] timer heartbeat default-on netdev usbport phy0rx phy0tx phy0assoc phy0radio phy0tpt

Similary for brightness

cat brightness
0

The [ ] brackets indicate the set trigger.

Maybe this would be worth a read

https://openwrt.org/docs/guide-user/base-system/led_configuration

thx for the link, given me some ideas.

i saw in the link a temporarily command to set things on, any command in Putty that can set permanent OFF?

do quite get the meaning of uci show system | grep “system.led”