Install gpiod

sudo apt update
sudo apt install gpiod

* gpiodetect - list all gpiochips present on the system, their names, labels
               and number of GPIO lines

* gpioinfo   - list all lines of specified gpiochips, their names, consumers,
               direction, active state and additional flags

* gpioget    - read values of specified GPIO lines

* gpioset    - set values of specified GPIO lines, potentially keep the lines
               exported and wait until timeout, user input or signal

* gpiofind   - find the gpiochip name and line offset given the line name

* gpiomon    - wait for events on GPIO lines, specify which events to watch,
               how many events to process before exiting or if the events
               should be reported to the console

sudo apt-get update
sudo apt-get install nvidia-jetpack

CUDA：

终端命令行执行：nvcc -V，

如果提示：bash: nvcc: command not found

则先导入环境变量：

$  export  PATH=/usr/local/cuda-11/bin:$PATH

$  export  LD_LIBRARY_PATH=/usr/local/cuda-11/lib64:$LD_LIBRARY_PATH

再执行nvcc -V即可。

cudnn：

终端命令行执行：

$  dpkg  --list  | grep  cudnn

opencv:

终端命令行执行：

$  dpkg  --list  | grep  libopencv

tensorRT:

终端命令行执行：

$  pip   list   |  grep  tensorrt

network:
    version: 2
    renderer: NetworkManager
    ethernets:
        eth0:  # 有线网卡的名字
            mtu: 9000 #设置的mtu值，如果加上此项过后，需重启系统才会生效。
            addresses: [11.22.33.44/24]  # 填IP地址，后面有一个/24
            dhcp4: no  # IPv4关闭自动获取IP
            dhcp6: no  # IPv6关闭自动获取IP
            gateway4: 11.22.33.2  # 设置网关，注意网关前3位跟IP地址前3位肯定是一致的。
            nameservers:
                addresses: [22.33.44.1,22.33.44.2] # 设置DNS解析主、备的服务器IP地址，如果有多个中间用逗号隔开，但不要有空格

echo 255 > /sys/kernel/debug/tegra_fan/target_pwm  （L4T老版本）

或者

echo 255 >/sys/devices/pwm-fan/target_pwm

或者

sudo  systemctl  stop  nvfancontrol.service 

echo  255 > /sys/devices/platform/pwm-fan/hwmon/hwmon3/pwm1    （Jetpack5.*）

运行如下命令：

head -n1 /etc/nv_tegra_release