mirror of
https://github.com/systemd/systemd.git
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167 lines
6.4 KiB
XML
167 lines
6.4 KiB
XML
<?xml version='1.0'?> <!--*-nxml-*-->
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<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
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"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
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<!--
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This file is part of systemd.
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Copyright 2013 Harald Hoyer
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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-->
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<refentry id="kernel-install">
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<refentryinfo>
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<title>kernel-install</title>
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<productname>systemd</productname>
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<authorgroup>
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<author>
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<contrib>Developer</contrib>
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<firstname>Harald</firstname>
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<surname>Hoyer</surname>
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<email>harald@redhat.com</email>
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</author>
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</authorgroup>
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</refentryinfo>
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<refmeta>
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<refentrytitle>kernel-install</refentrytitle>
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<manvolnum>8</manvolnum>
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</refmeta>
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<refnamediv>
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<refname>kernel-install</refname>
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<refpurpose>Add and remove kernel and initramfs images to and from /boot</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<cmdsynopsis>
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<command>kernel-install</command> <arg choice="req">COMMAND</arg> <arg choice="req">KERNEL VERSION</arg> <arg choice="req">KERNEL IMAGE</arg>
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</cmdsynopsis>
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</refsynopsisdiv>
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<refsect1>
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<title>Description</title>
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<para>
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<command>kernel-install</command> is used to install and remove kernel and
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initramfs images to and from <filename>/boot</filename>.
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</para>
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<para>kernel-install will execute the files located in the directory <filename>/usr/lib/kernel/install.d/</filename>
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and the local administration directory <filename>/etc/kernel/install.d/</filename>.
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All files are collectively sorted and executed in lexical order, regardless of the directories in
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which they live. However, files with identical file names replace each other.
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Files in <filename>/etc/kernel/install.d/</filename> take precedence over files with the same name
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in <filename>/usr/lib/kernel/install.d/</filename>. This can be used to override a system-supplied
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executables with a local file if needed; a symbolic link in <filename>/etc/kernel/install.d/</filename>
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with the same name as an executable in <filename>/usr/lib/kernel/install.d/</filename>,
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pointing to /dev/null, disables the executable entirely. Executables must have the
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extension .install; other extensions are ignored.</para>
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</refsect1>
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<refsect1>
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<title>Commands</title>
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<para>The following commands are understood:</para>
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<variablelist>
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<varlistentry>
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<term>add <KERNEL VERSION> <KERNEL IMAGE></term>
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<listitem>
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<para>calls every executable <filename>/usr/lib/kernel/install.d/*.install</filename>
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and <filename>/etc/kernel/install.d/*.install</filename> with the arguments
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"add <KERNEL VERSION> <filename>/boot/<MACHINE-ID>/<KERNEL VERSION>/</filename>"</para>
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<para>kernel-install copies <KERNEL IMAGE> to
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<filename>/boot/<MACHINE-ID>/<KERNEL VERSION>/linux</filename>.</para>
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<para>kernel-install also creates a boot loader entry according to the boot loader specification
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in <filename>/boot/loader/entries/<MACHINE-ID>-<KERNEL VERSION>.conf</filename>.
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If the file <filename>initrd</filename> is found next to the <filename>linux</filename> file,
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the initrd will be added to the configuration.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>remove <KERNEL VERSION> <KERNEL IMAGE></term>
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<listitem><para>calls every executable <filename>/usr/lib/kernel/install.d/*.install</filename>
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and <filename>/etc/kernel/install.d/*.install</filename> with the arguments:
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"remove <KERNEL VERSION> <filename>/boot/<MACHINE-ID>/<KERNEL VERSION>/</filename>"
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</para>
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<para>kernel-install removes the entire directory <filename>/boot/<MACHINE-ID>/<KERNEL VERSION>/</filename>
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and the file <filename>/boot/loader/entries/<MACHINE-ID>-<KERNEL VERSION>.conf</filename></para>
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</listitem>
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</varlistentry>
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</variablelist>
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</refsect1>
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<refsect1>
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<title>Exit status</title>
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<para>If every executable returns with 0, 0 is returned, a non-zero failure code otherwise.</para>
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</refsect1>
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<refsect1>
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<title>Files</title>
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<variablelist>
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<varlistentry>
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<term>
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<filename>/usr/lib/kernel/install.d/*.install</filename>
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<filename>/etc/kernel/install.d/*.install</filename>
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</term>
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<listitem>
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<para>Drop-in files, which are executed by kernel-install.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>
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<filename>/etc/kernel/cmdline</filename>
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<filename>/proc/cmdline</filename>
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</term>
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<listitem>
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<para>The content of the file <filename>/etc/kernel/cmdline</filename> specifies the kernel command line to use.
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If that file does not exist, <filename>/proc/cmdline</filename> is used.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>
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<filename>/etc/machine-id</filename>
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</term>
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<listitem>
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<para>The content of the file specifies the machine identification <MACHINE-ID>.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>
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<filename>/etc/os-release</filename>
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</term>
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<listitem>
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<para>The content of the file specifies the operating system id <OS-ID>.</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</refsect1>
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<refsect1>
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<title>See Also</title>
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<para>
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<citerefentry><refentrytitle>machine-id</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>os-release</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
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<ulink url="http://www.freedesktop.org/wiki/Specifications/BootLoaderSpec">Boot loader specification</ulink>
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</para>
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</refsect1>
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</refentry>
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