You can use the systemctl command to check whether the service has been started. The specific command is such as [systemctl status service name.service].
The .service after the service name can be omitted. This is a change after CenOS7 adopts systemd as the initialization process.
Systemctl is a systemd tool, mainly responsible for controlling the systemd system and service manager.
Systemd is a collection of system management daemons, tools and libraries used to replace the System V initial process. The function of Systemd is to centrally manage and configure Linux systems.
Take the network service network.service as an example:
systemctl status network.service
Recommended tutorial: centos tutorial
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