Linux 系统中用Systemd 管理系统服务

Systemd  命令详解：

https://www.digitalocean.com/community/tutorials/how-to-use-systemctl-to-manage-systemd-services-and-units

如何理解System Unit 和 他的配置文件 Unit Files :

https://www.digitalocean.com/community/tutorials/understanding-systemd-units-and-unit-files