In Linux, services are background processes that run continuously to perform specific tasks.
Systemd is a system and service manager for Linux that provides control over the startup process, services, and system resources.
The systemctl command is used to manage services in systemd.
systemctl command can be used to start/stop and restart a service
systemctl command can be used to enable/disable a service
systemctl command can also enables a service to start automatically during system boot.
The systemctl command is quite versatile and has many options and parameters that can be used as per the specific needs.
Introduction to Linux environment variables with the env command