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The linux-image package currently includes empty hook directories
(/etc/kernel/{pre,post}{inst,rm}.d/ by default).
These directories were perhaps intended as a fail-safe in case no
hook scripts exist there.
However, they are really unnecessary because the run-parts command is
already guarded by the following check:
test -d ${debhookdir}/${script}.d && run-parts ...
The only difference is that the run-parts command either runs for empty
directories (resulting in a no-op) or is skipped entirely.
The maintainer scripts will succeed without these dummy directories.
The linux-image packages from the Debian kernel do not contain
/etc/kernel/*.d/, either.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.