====== Ubuntu - Services - Enable a service at boot ======
===== Using systemctl =====
To start a service at boot, use the enable command:
sudo systemctl enable application.service
This will create a symbolic link from the system’s copy of the service file (usually in /lib/systemd/system or /etc/systemd/system) into the location on disk where systemd looks for autostart files (usually /etc/systemd/system/some_target.target.wants).
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===== Using invoke-rc.d =====
update-rc.d service_name defaults
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===== Using System V =====
With **sysv-rc-conf** or **sysvconfig**
sysv-rc-conf service_name on