0

I have a Raspberry Pi running a Java application (with Swing/GUI) in a kiosk-like setup.

I want to terminate (or preferably prevent from starting) all unnecessary processes that are not essential for my application to run.

How can I identify the mandatory processes and prevent them from starting?

I attempted to search for this information on Google, but unfortunately, I haven't had any luck so far.

My application includes a GUI, utilizes a mouse and keyboard, doesn't require network access, and needs to interact with specific USB devices.

While I don't necessarily need Ubuntu, I do require a 64-bit OS for the Raspberry Pi.

Improve this question
3
  • Please clarify your specific problem or provide additional details to highlight exactly what you need. As it's currently written, it's hard to tell exactly what you're asking.
    – Community Bot
    Commented Jun 28, 2023 at 12:31
  • Ubuntu is rather bloated. getting it down to a "bare minimum" state is much more complex than choosing a different, more lightweight distro (Debian comes to mind).
    – Panki
    Commented Jun 28, 2023 at 21:31
  • @Panki good point, I will check if something has appeared for Rasberry since I last checked ... when the 64 bit landscape was pretty barren.
    – amateur99
    Commented Jun 29, 2023 at 14:29

1 Answer 1

Reset to default
0

Sadly the internet does not know what the dependencies are for your software / hardware / use-case.

Only you can find that out.

Running systemd status will give you a list of the services currently running. Running systemd status <servicename> will tell you where the unit file is for each service - any 'After' 'Wants', 'Requires' or 'Before' is an explicit dependency. That will give you a starting point for inentifying what you can safely turn off. Note all dependencies may be explicitly flagged in the unit files.

Then it's simply a matter of turning off a service at a time and testing the behaviour. Use systemctl stop <servicename> to turn it off, and systemctl disable <servicename> to prevent it starting automatically the next time you boot.

Ideally you should be uninstalling redundant components. The dependencies defined in software packages should allign to the startup, but that's not always the case.

Improve this answer

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .