this post was submitted on 18 Oct 2023
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Privacy
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Systemd "enabled" services are literal symlinks... whenever a target runs, it tries to start also all the service files on its "wants" directory.
You can literally enable any service for next boot by making a symlink in
/etc/systemd/system/multi-user.target.wants/
(or whichever other target you want it to run on) as root (and installation scripts are run as root).This is actually very close (just tested and confirmed it). I somehow stand corrected about requiring manual enablement but this is just using the package manager to do the dirty work for you.
However the program itself cannot write into those directories without root permissions. You still have to allow your package manager to do this with root permissions as mentioned.