5aded36978
It is annoying when we have dead links on fd.o. Add project='man-pages|die-net|archlinux' to <citerefentry>-ies. In generated html, add external links to http://man7.org/linux/man-pages/man, http://linux.die.net/man/, https://www.archlinux.org/. By default, pages in sections 2 and 4 go to man7, since Michael Kerrisk is the autorative source on kernel related stuff. The rest of links goes to linux.die.net, because they have the manpages. Except for the pacman stuff, since it seems to be only available from archlinux.org. Poor gummiboot gets no link, because gummitboot(8) ain't to be found on the net. According to common wisdom, that would mean that it does not exist. But I have seen Kay using it, so I know it does, and deserves to be found. Can somebody be nice and put it up somewhere?
381 lines
22 KiB
XML
381 lines
22 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 2012 Lennart Poettering
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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-command-line">
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<refentryinfo>
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<title>kernel-command-line</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>Lennart</firstname>
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<surname>Poettering</surname>
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<email>lennart@poettering.net</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-command-line</refentrytitle>
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<manvolnum>7</manvolnum>
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</refmeta>
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<refnamediv>
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<refname>kernel-command-line</refname>
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<refpurpose>Kernel command line parameters</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<para><filename>/proc/cmdline</filename></para>
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</refsynopsisdiv>
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<refsect1>
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<title>Description</title>
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<para>The kernel, the initial RAM disk (initrd) and
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basic userspace functionality may be configured at boot via
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kernel command line arguments.</para>
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<para>For command line parameters understood by the
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kernel, please see <ulink
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url="https://www.kernel.org/doc/Documentation/kernel-parameters.txt"><filename>kernel-parameters.txt</filename></ulink>
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and
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<citerefentry project='man-pages'><refentrytitle>bootparam</refentrytitle><manvolnum>7</manvolnum></citerefentry>.</para>
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<para>For command line parameters understood by the
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initial RAM disk, please see
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<citerefentry project='die-net'><refentrytitle>dracut.cmdline</refentrytitle><manvolnum>7</manvolnum></citerefentry>,
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or the documentation of the specific initrd
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implementation of your installation.</para>
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</refsect1>
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<refsect1>
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<title>Core OS Command Line Arguments</title>
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<variablelist class='kernel-commandline-options'>
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<varlistentry>
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<term><varname>systemd.unit=</varname></term>
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<term><varname>rd.systemd.unit=</varname></term>
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<term><varname>systemd.dump_core=</varname></term>
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<term><varname>systemd.crash_shell=</varname></term>
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<term><varname>systemd.crash_chvt=</varname></term>
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<term><varname>systemd.confirm_spawn=</varname></term>
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<term><varname>systemd.show_status=</varname></term>
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<term><varname>systemd.log_target=</varname></term>
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<term><varname>systemd.log_level=</varname></term>
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<term><varname>systemd.log_color=</varname></term>
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<term><varname>systemd.log_location=</varname></term>
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<term><varname>systemd.default_standard_output=</varname></term>
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<term><varname>systemd.default_standard_error=</varname></term>
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<term><varname>systemd.setenv=</varname></term>
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<listitem>
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<para>Parameters understood by
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the system and service manager
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to control system behavior. For details, see
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<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>systemd.mask=</varname></term>
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<term><varname>systemd.wants=</varname></term>
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<term><varname>systemd.debug-shell</varname></term>
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<listitem>
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<para>Additional parameters
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understood by
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<citerefentry><refentrytitle>systemd-debug-generator</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
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to mask or start specific
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units at boot, or invoke a
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debug shell on tty9.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>systemd.restore_state=</varname></term>
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<listitem>
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<para>This parameter is understood by
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several system tools to control
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whether or not they should restore
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system state from the previous boot.
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For details, see
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<citerefentry><refentrytitle>systemd-backlight@.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>
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and
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<citerefentry><refentrytitle>systemd-rfkill@.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>quiet</varname></term>
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<listitem>
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<para>Parameter understood by
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both the kernel and the system
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and service manager to control
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console log verbosity. For
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details, see
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<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>debug</varname></term>
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<listitem>
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<para>Parameter understood by
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both the kernel and the system
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and service manager to control
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console log verbosity. For
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details, see
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<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>-b</varname></term>
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<term><varname>emergency</varname></term>
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<term><varname>single</varname></term>
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<term><varname>s</varname></term>
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<term><varname>S</varname></term>
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<term><varname>1</varname></term>
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<term><varname>2</varname></term>
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<term><varname>3</varname></term>
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<term><varname>4</varname></term>
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<term><varname>5</varname></term>
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<listitem>
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<para>Parameters understood by
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the system and service
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manager, as compatibility
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options. For details, see
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<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>locale.LANG=</varname></term>
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<term><varname>locale.LANGUAGE=</varname></term>
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<term><varname>locale.LC_CTYPE=</varname></term>
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<term><varname>locale.LC_NUMERIC=</varname></term>
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<term><varname>locale.LC_TIME=</varname></term>
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<term><varname>locale.LC_COLLATE=</varname></term>
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<term><varname>locale.LC_MONETARY=</varname></term>
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<term><varname>locale.LC_MESSAGES=</varname></term>
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<term><varname>locale.LC_PAPER=</varname></term>
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<term><varname>locale.LC_NAME=</varname></term>
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<term><varname>locale.LC_ADDRESS=</varname></term>
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<term><varname>locale.LC_TELEPHONE=</varname></term>
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<term><varname>locale.LC_MEASUREMENT=</varname></term>
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<term><varname>locale.LC_IDENTIFICATION=</varname></term>
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<listitem>
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<para>Parameters understood by
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the system and service manager
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to control locale and language
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settings. For details, see
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<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>fsck.mode=</varname></term>
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<term><varname>fsck.repair=</varname></term>
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<listitem>
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<para>Parameters understood by
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the file system checker
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services. For details, see
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<citerefentry><refentrytitle>systemd-fsck@.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>quotacheck.mode=</varname></term>
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<listitem>
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<para>Parameter understood by
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the file quota checker
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service. For details, see
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<citerefentry><refentrytitle>systemd-quotacheck.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>systemd.journald.forward_to_syslog=</varname></term>
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<term><varname>systemd.journald.forward_to_kmsg=</varname></term>
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<term><varname>systemd.journald.forward_to_console=</varname></term>
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<term><varname>systemd.journald.forward_to_wall=</varname></term>
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<listitem>
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<para>Parameters understood by
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the journal service. For
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details, see
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<citerefentry><refentrytitle>systemd-journald.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>vconsole.keymap=</varname></term>
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<term><varname>vconsole.keymap.toggle=</varname></term>
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<term><varname>vconsole.font=</varname></term>
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<term><varname>vconsole.font.map=</varname></term>
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<term><varname>vconsole.font.unimap=</varname></term>
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<listitem>
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<para>Parameters understood by
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the virtual console setup logic. For
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details, see
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<citerefentry><refentrytitle>systemd-vconsole-setup.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>udev.log-priority=</varname></term>
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<term><varname>rd.udev.log-priority=</varname></term>
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<term><varname>udev.children-max=</varname></term>
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<term><varname>rd.udev.children-max=</varname></term>
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<term><varname>udev.exec-delay=</varname></term>
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<term><varname>rd.udev.exec-delay=</varname></term>
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<term><varname>net.ifnames=</varname></term>
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<listitem>
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<para>Parameters understood by
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the device event managing daemon. For
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details, see
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<citerefentry><refentrytitle>systemd-udevd.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>plymouth.enable=</varname></term>
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<listitem>
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<para>May be used to disable
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the Plymouth boot splash. For
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details, see
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<citerefentry project='die-net'><refentrytitle>plymouth</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>luks=</varname></term>
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<term><varname>rd.luks=</varname></term>
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<term><varname>luks.crypttab=</varname></term>
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<term><varname>rd.luks.crypttab=</varname></term>
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<term><varname>luks.uuid=</varname></term>
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<term><varname>rd.luks.uuid=</varname></term>
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<term><varname>luks.options=</varname></term>
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<term><varname>rd.luks.options=</varname></term>
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<term><varname>luks.key=</varname></term>
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<term><varname>rd.luks.key=</varname></term>
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<listitem>
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<para>Configures the LUKS
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full-disk encryption logic at
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boot. For details, see
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<citerefentry><refentrytitle>systemd-cryptsetup-generator</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>fstab=</varname></term>
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<term><varname>rd.fstab=</varname></term>
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<listitem>
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<para>Configures the
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<filename>/etc/fstab</filename>
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logic at boot. For details, see
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<citerefentry><refentrytitle>systemd-fstab-generator</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>root=</varname></term>
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<term><varname>rootfstype=</varname></term>
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<term><varname>rootfsflags=</varname></term>
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<term><varname>ro</varname></term>
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<term><varname>rw</varname></term>
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<listitem>
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<para>Configures the root file
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system and its file system
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type and mount options, as
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well as whether it shall be
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mounted read-only or
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read-writable initially. For
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details, see
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<citerefentry><refentrytitle>systemd-fstab-generator</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>systemd.gpt_auto=</varname></term>
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<term><varname>rd.systemd.gpt_auto=</varname></term>
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<listitem>
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<para>Configures whether GPT
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based partition auto-discovery
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shall be attempted. For
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details, see
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<citerefentry><refentrytitle>systemd-gpt-auto-generator</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>modules-load=</varname></term>
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<term><varname>rd.modules-load=</varname></term>
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<listitem>
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<para>Load a specific kernel
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module early at boot. For
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details, see
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<citerefentry><refentrytitle>systemd-modules-load.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</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>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
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<citerefentry project='man-pages'><refentrytitle>bootparam</refentrytitle><manvolnum>7</manvolnum></citerefentry>,
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<citerefentry project='die-net'><refentrytitle>dracut.cmdline</refentrytitle><manvolnum>7</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd-debug-generator</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd-fsck@.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd-quotacheck.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd-journald.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd-vconsole-setup.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd-udevd.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
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<citerefentry project='die-net'><refentrytitle>plymouth</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd-cryptsetup-generator</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd-fstab-generator</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd-gpt-auto-generator</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd-modules-load.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd-backlight@.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd-rfkill@.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>
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</para>
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</refsect1>
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</refentry>
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