Start a Service on Boot
From: https://linuxconfig.org/how-to-start-service-on-boot-on-ubuntu-22 -04 





How to start service on boot on Ubuntu 22.04
 12 March 2022 by Korbin Brown
In this tutorial you will learn how to start a service on boot on Ubuntu
22.04 Jammy Jellyfish Linux. Ubuntu uses systemd service manager to manage
services which means to enable and disable services is an easy and
straightforward task.

In this tutorial you will learn:

	
	
	How to start service on boot on Ubuntu 22.04 Jammy Jellyfish Linux

Software Requirements and Linux Command Line Conventions 




Category	Requirements, Conventions or Software Version Used

System Ubuntu 22.04 Jammy Jellyfish

Software systemd (installed by default)

Other Privileged access to your Linux system as root or via the sudo
command.

Conventions # – requires given linux commands to be executed with root
privileges either directly as a root user or by use of sudo command
$ – requires given linux commands to be executed as a regular non
-privileged user






How to start service on boot (Ubuntu 22.04)
step by step instructions
In this tutorial we will be using the apache2 service as an example.
Therefore, replace the apache2 name with the name of the service you intend to 
start on boot.

In case you do not know the name of the service you wish to start on boot then
follow our guide on how to list services on Ubuntu 22.04.




1 Check Current State First, check the current state of the service to see whether it is
enabled to start on boot. To do so, open a command line terminal and execute
the following command:
	$ systemctl status apache2
	
	
	Currently this particular service is disabled to start during the system boot time

Note
that the “vendor preset” text tells you whether the service starts automatically
by default or not. This is just the default value when the service is installed,
and not necessarily what the service is currently set to.




2 systemctl Start Service On Boot Use the systemctl command to start the service on boot. For
example:
	$ sudo systemctl enable apache2

Alternatively, if you also wish to enable and start the service at the same
time you may execute:
	$ sudo systemctl enable --now apache2




3 Confirm Service Enabled Once the service is enabled to start on boot you can confirm its
status once again by executing:
	$ sudo systemctl status apache2




4 Disable Service StartTo disable service to start on boot use systemctl command again. For
example:
	$ sudo systemctl disable apache2




Closing Thoughts
In this tutorial, we saw how to enable a service to start automatically upon
boot in Ubuntu 22.04 Jammy Jellyfish Linux. Ubuntu, like most other modern
Linux distros, uses systemd in order to manage services. Once you know how
to use the systemctl enable and systemctl disable commands, you can set any
service to start automatically upon boot or not.




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