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：

Terminal command line execution ：nvcc  -V，

If prompted：bash: nvcc: command not found

Then the leading environment variable:

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

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

Then run the nvcc-V command.

cudnn：

Terminal command line execution:

$  dpkg  --list  | grep  cudnn

opencv:

Terminal command line execution:

$  dpkg  --list  | grep  libopencv

tensorRT:

Terminal command line execution:

$  pip   list   |  grep  tensorrt

network:
    version: 2
    renderer: NetworkManager
    ethernets:
        eth0:  # Network device name:
            mtu: 9000 #If this parameter is added to the mtu value, it takes effect only after the system is restarted.
            addresses: [11.22.33.44/24]  # Fill in the IP address, followed by a /24
            dhcp4: no  # Example Disable IPv4 to automatically obtain an IP address
            dhcp6: no  # Example Disable IPv6 to automatically obtain an IP address
            gateway4: 11.22.33.2  # Note The first three bits of the gateway must be the same as the first three bits of the IP address.
            nameservers:
                addresses: [22.33.44.1,22.33.44.2] # Set the IP addresses of the active and standby servers for DNS resolution. If there are multiple IP addresses, separate them with commas (,), but do not contain Spaces

plink-jetpack: 自研載板BSP (gitee.com)

echo 255 > /sys/kernel/debug/tegra_fan/target_pwm   (L4T Old version)

Or

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

Or

echo  255 > /sys/devices/platform/pwm-fan/hwmon/hwmon1/device/hwmon/hwmon1/pwm1   (Jetpack5.*)

https://gitee.com/plink718/plink-jetpack

Run command：

head -n 1 /etc/nv_tegra_release