Linux article---use systemctl start xxx to start your own program|boot startup|daemon process

• Machine: Nvidia Jetson Xavier
• System: ubuntu 18.04

Recently, I am using symfony's console component and need to execute a background php process and keep the background process existing. Here I am using the Systemctl command. Systemctl is a collection of system management daemons, tools and libraries. I will post my configuration directly later, for reference only:

1. Create a service

cd /etc/systemd/system
sudo vim app.service

The content of app.service is as follows:
Run python script

[Unit]
Description=app
After=network.target

[Service]
User=nvidia
ExecStart=/usr/bin/python3 /home/nvidia/app/yolov4_pre/app_test_time.py
Restart=always
RestartSec=10

[Install]
WantedBy=multi-user.target

• If you want to change sudo, just change User to root. There is no need to add sudo in front of ExecStart. The details are as follows

[Unit]
Description=app
After=network.target

[Service]
User=nvidia
ExecStart=/usr/bin/python3 /home/nvidia/app/yolov4_pre/app_test_time.py
Restart=always
RestartSec=10

[Install]
WantedBy=multi-user.target

2. Modify permissions

sudo chmod +x app.service

3. Start the service

sudo systemctl daemon-reload
sudo systemctl start app.service
sudo systemctl status app.service

4. Test

Will the kill python program start automatically?
You can see from the picture below that it has been updated. .