systemctl for fedora

 

Enabling the Service To configure a service to be automatically started at boot time, use the systemctl command in the following form: systemctlenable service_name .service The service will be started the next time you boot the system. For information on how to start the service immediately, refer to  Section 7.2.2, “Running the Service” . Example 7.1. Enabling the httpd service Imagine you want to run the Apache HTTP Server on your system. Provided that you have the httpd package installed, you can enable the httpd service by typing the following at a shell prompt as root: ~]#systemctl enable httpd.service
7.1.2. Disabling the Service To disable starting a service at boot time, use the systemctl command in the following form: systemctldisable service_name .service The next time you boot the system, the service will  not  be started. For information on how to stop the service immediately, refer to  Section 7.2.3, “Stopping the Service” . Example 7.2. Disabling the telnet service In order to secure the system, users are advised to disable insecure connection protocols such as Telnet. You can make sure that the telnet service is disabled by running the following command as root:

~]# systemctl disable telnet.service

 

 

 

查询状态：

To ensure optimal performance on POWER architecture, it is recommended that the irqbalance service is enabled. In most cases, this service is installed and configured to run during the Fedora 16 installation. To verify that irqbalance is running, type the following at a shell prompt:

systemctl status irqbalance.service

 

 

例子：fedora17

[leosu@leo ELYMUS_work]$ sudo  systemctl disable httpd.service
rm '/etc/systemd/system/multi-user.target.wants/httpd.service'

[leosu@leo ELYMUS_work]$ ls /etc/systemd/system/multi-user.target.wants/
abrt-ccpp.service    acpid.service       avahi-daemon.service  irqbalance.service     nfs-lock.service  sendmail.service   xinetd.service
abrtd.service        arp-ethers.service  crond.service         mcelog.service          remote-fs.target  smartd.service
abrt-oops.service    atd.service         cups.path             mdmonitor.service       rpcbind.service   sm-client.service
abrt-vmcore.service  auditd.service      gpm.service           NetworkManager.service  rsyslog.service   sshd.service