Install and use sysusers.d/tmpfiles.d config files#8
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This is widely considered bad practice, as the kernel recycles UIDs/GIDs. So any potential leftover file/directory can then become owned by the next user/group that gets added, with unpredictable consequences.
sysusers.d/tmpfiles.d config files allow a package to use declarative configuration instead of manually written maintainer scripts. This also allows image-based systems to be created with /usr/ only, and also allows for factory resetting a system and recreating /etc/ on boot. https://www.freedesktop.org/software/systemd/man/latest/sysusers.d.html https://www.freedesktop.org/software/systemd/man/latest/tmpfiles.d.html Note that this does not require a hard dependency on systemd, debhelper generates depetencies correctly so that they work out of the box on non-systemd and non-linux Debian builds seamlessly.
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sysusers.d/tmpfiles.d config files allow a package to use declarative configuration instead of manually written maintainer scripts. This also allows image-based systems to be created with /usr/ only, and also allows for factory resetting a system and recreating /etc/ on boot. https://www.freedesktop.org/software/systemd/man/latest/sysusers.d.html https://www.freedesktop.org/software/systemd/man/latest/tmpfiles.d.html Note that this does not require a hard dependency on systemd, debhelper generates depetencies correctly so that they work out of the box on non-systemd and non-linux Debian builds seamlessly.