禁用树莓派电源指示灯

echo "# Disable the PWR LED" | sudo tee -a /boot/config.txtecho "dtparam=pwr_led_trigger=none" | sudo tee -a /boot/config.txtecho "dtparam=pwr_led_activelow=off" | sudo tee -a /boot/config.txt

禁用树莓派以太网指示灯

echo "# Disable Ethernet LEDs" | sudo tee -a /boot/config.txtecho "dtparam=eth_led0=14" | sudo tee -a /boot/config.txtecho "dtparam=eth_led1=14" | sudo tee -a /boot/config.txt

禁用树莓派wifi

echo "dtoverlay=pi3-disable-wifi" | sudo tee -a /boot/config.txt

禁用树莓派蓝牙

echo "dtoverlay=pi3-disable-bt" | sudo tee -a /boot/config.txt

echo "blacklist snd_bcm2835"> /etc/modprobe.d/alsa-blacklist.conf

act_led_trigger         Choose which activity the LED tracks.Use "heartbeat" for a nice load indicator.(default "mmc")act_led_activelow       Set to "on" to invert the sense of the LED(default "off")N.B. For Pi 3B, 3B+, 3A+ and 4B, use the act-ledoverlay.act_led_gpio            Set which GPIO to use for the activity LED(in case you want to connect it to an externaldevice)(default "16" on a non-Plus board, "47" on aPlus or Pi 2)N.B. For Pi 3B, 3B+, 3A+ and 4B, use the act-ledoverlaypwr_led_triggerpwr_led_activelowpwr_led_gpioAs for act_led_*, but using the PWR LED.Not available on Model A/B boards.