Centos 7 managing services with Systemd

Centos 7 managing services with Systemd.
-List all the current loaded targets as command below:

$ sudo systemctl list-units -t target

Each services has 3 states; enabled, disabled and static.
- To list enabled services as command below:

$ sudo systemctl list-unit-files --type=service | grep enabled

- To start/stop/restart services as command below:

# systemctl status <servicename>
# systemctl stop <servicename>
# systemctl start <servicename>
# systemctl restart <servicename>

- To check running ntp services as comman below:

$ sudo systemctl list-units --type service --all | grep ntp

- Set the service to start a boot:

# systemctl enable <servicename>

- Disable service start-up boot

# systemctl disable service

The update later related command line "Centos 7 managing services with Systemd" in this article.