systemctl - Control the systemd system and service manager
systemctl may be used to introspect and control the state of the systemd(1) system and service manager.
systemd is a system and service manager for Linux operating systems. When run as first process on boot (as PID 1), it acts as init system that brings up and maintains userspace services.
Getting Help
systemctl -h
systemctl [OPTIONS...] {COMMAND} …
Query or send control commands to the systemd manager.
-h –help Show this help
–version Show package version
-t –type=TYPE List only units of a particular type
-p –property=NAME Show only properties by this name
-a –all Show all units/properties, including dead/empty ones
–failed Show only failed units
–full Don’t ellipsize unit names on output
–fail When queueing a new job, fail if conflicting jobs are
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Fedora systemctl command line tool
start, stop, and restart the services on the command line using the systemctl utility.
Configuring Services
To allow you to configure which services are started at boot time, Fedora is shipped with the systemctl command line tool. Do not use the ntsysv and chkconfig utilities. Although it is still possible to use the ntsysv and chkconfig utilities to manage services that have init scripts installed in the /etc/rc.d/init.d/ directory, it is advised that you use the systemctl utility.
Enabling the Service
To configure a service to be automatically started at boot time, use the systemctl command in the following form:
systemctl enable service_name.service
Running the Service
To run a service, use the systemctl command in the following form:
systemctl start service_name.service
Unit Commands:
list-units List loaded units
start [NAME...] Start (activate) one or more units
stop [NAME...] Stop (deactivate) one or more units
reload [NAME...] Reload one or more units
restart [NAME...] Start or restart one or more units
try-restart [NAME...] Restart one or more units if active
reload-or-restart [NAME...] Reload one or more units is possible,
otherwise start or restart
reload-or-try-restart [NAME...] Reload one or more units is possible,
otherwise restart if active
isolate [NAME] Start one unit and stop all others
kill [NAME...] Send signal to processes of a unit
