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NAME | SYNOPSIS | DESCRIPTION | COMMANDS | EXIT STATUS | FILES | SEE ALSO | NOTES | COLOPHON |
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KERNEL-INSTALL(8) kernel-install KERNEL-INSTALL(8)
kernel-install - Add and remove kernel and initramfs images to and
from /boot
kernel-install COMMAND KERNEL-VERSION [KERNEL-IMAGE]
kernel-install is used to install and remove kernel and initramfs
images to and from /boot.
kernel-install will execute the files located in the directory
/usr/lib/kernel/install.d/ and the local administration directory
/etc/kernel/install.d/. All files are collectively sorted and
executed in lexical order, regardless of the directory in which they
live. However, files with identical filenames replace each other.
Files in /etc/kernel/install.d/ take precedence over files with the
same name in /usr/lib/kernel/install.d/. This can be used to override
a system-supplied executables with a local file if needed; a symbolic
link in /etc/kernel/install.d/ with the same name as an executable in
/usr/lib/kernel/install.d/, pointing to /dev/null, disables the
executable entirely. Executables must have the extension ".install";
other extensions are ignored.
An executable should return 0 on success. It may also return 77 to
cause the whole operation to terminate (executables later in lexical
order will be skipped).
The following commands are understood:
add KERNEL-VERSION KERNEL-IMAGE
kernel-install creates the directory
/boot/MACHINE-ID/KERNEL-VERSION/ and calls executables from
/usr/lib/kernel/install.d/*.install and
/etc/kernel/install.d/*.install with the arguments
add KERNEL-VERSION \
/boot/MACHINE-ID/KERNEL-VERSION/ KERNEL-IMAGE
The kernel-install plugin 50-depmod.install runs depmod for the
KERNEL-VERSION.
The kernel-install plugin 90-loaderentry.install copies
KERNEL-IMAGE to /boot/MACHINE-ID/KERNEL-VERSION/linux. It also
creates a boot loader entry according to the boot loader
specification in
/boot/loader/entries/MACHINE-ID-KERNEL-VERSION.conf. The title of
the entry is the PRETTY_NAME parameter specified in
/etc/os-release or /usr/lib/os-release (if the former is
missing), or "Linux KERNEL-VERSION", if unset. If the file initrd
is found next to the linux file, the initrd will be added to the
configuration.
remove KERNEL-VERSION
Calls executables from /usr/lib/kernel/install.d/*.install and
/etc/kernel/install.d/*.install with the arguments
remove KERNEL-VERSION /boot/MACHINE-ID/KERNEL-VERSION/
kernel-install removes the entire directory
/boot/MACHINE-ID/KERNEL-VERSION/ afterwards.
The kernel-install plugin 90-loaderentry.install removes the file
/boot/loader/entries/MACHINE-ID-KERNEL-VERSION.conf.
If every executable returns 0 or 77, 0 is returned, and a non-zero
failure code otherwise.
/usr/lib/kernel/install.d/*.install /etc/kernel/install.d/*.install
Drop-in files which are executed by kernel-install.
/etc/kernel/cmdline /proc/cmdline
The content of the file /etc/kernel/cmdline specifies the kernel
command line to use. If that file does not exist, /proc/cmdline
is used.
/etc/machine-id
The content of the file specifies the machine identification
MACHINE-ID.
/etc/os-release /usr/lib/os-release
The content of the file specifies the operating system title
PRETTY_NAME.
machine-id(5), os-release(5), Boot loader specification[1]
1. Boot loader specification
https://www.freedesktop.org/wiki/Specifications/BootLoaderSpec
This page is part of the systemd (systemd system and service manager)
project. Information about the project can be found at
⟨http://www.freedesktop.org/wiki/Software/systemd⟩. If you have a bug
report for this manual page, see
⟨http://www.freedesktop.org/wiki/Software/systemd/#bugreports⟩. This
page was obtained from the project's upstream Git repository
⟨https://github.com/systemd/systemd.git⟩ on 2018-02-02. (At that
time, the date of the most recent commit that was found in the repos‐
itory was 2018-02-02.) If you discover any rendering problems in
this HTML version of the page, or you believe there is a better or
more up-to-date source for the page, or you have corrections or
improvements to the information in this COLOPHON (which is not part
of the original manual page), send a mail to man-pages@man7.org
systemd 234 KERNEL-INSTALL(8)
Pages that refer to this page: systemd.directives(7), systemd.index(7)
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HTML rendering created 2018-02-02 by Michael Kerrisk, author of The Linux Programming Interface, maintainer of the Linux man-pages project. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH.
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