d0767ffd08bbb5c069e266710eb0462315e47e6dLennart Poettering<?xml version='1.0'?> <!--*-nxml-*-->

d0767ffd08bbb5c069e266710eb0462315e47e6dLennart Poettering<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"

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d0767ffd08bbb5c069e266710eb0462315e47e6dLennart Poettering

d0767ffd08bbb5c069e266710eb0462315e47e6dLennart Poettering

d0767ffd08bbb5c069e266710eb0462315e47e6dLennart Poettering<refentry id="kernel-command-line">

07630cea1f3a845c09309f197ac7c4f11edd3b62Lennart Poettering

b5efdb8af40ea759a1ea584c1bc44ecc81dd00ceLennart Poettering <refentryinfo>

d0767ffd08bbb5c069e266710eb0462315e47e6dLennart Poettering <title>kernel-command-line</title>

d0767ffd08bbb5c069e266710eb0462315e47e6dLennart Poettering <productname>systemd</productname>

07630cea1f3a845c09309f197ac7c4f11edd3b62Lennart Poettering

07630cea1f3a845c09309f197ac7c4f11edd3b62Lennart Poettering <authorgroup>

d0767ffd08bbb5c069e266710eb0462315e47e6dLennart Poettering <author>

d0767ffd08bbb5c069e266710eb0462315e47e6dLennart Poettering <contrib>Developer</contrib>

3e348b8a6af4bc46562efa44500fe2fa44320aa1Ronny Chevalier <firstname>Lennart</firstname>

3e348b8a6af4bc46562efa44500fe2fa44320aa1Ronny Chevalier <surname>Poettering</surname>

d0767ffd08bbb5c069e266710eb0462315e47e6dLennart Poettering <email>lennart@poettering.net</email>

d0767ffd08bbb5c069e266710eb0462315e47e6dLennart Poettering </author>

d0767ffd08bbb5c069e266710eb0462315e47e6dLennart Poettering </authorgroup>

d0767ffd08bbb5c069e266710eb0462315e47e6dLennart Poettering </refentryinfo>

d0767ffd08bbb5c069e266710eb0462315e47e6dLennart Poettering

dfd9cf7f0b257d38f5527989dd9315e767fbe41bZbigniew Jędrzejewski-Szmek <refmeta>

dfd9cf7f0b257d38f5527989dd9315e767fbe41bZbigniew Jędrzejewski-Szmek <refentrytitle>kernel-command-line</refentrytitle>

d0767ffd08bbb5c069e266710eb0462315e47e6dLennart Poettering <manvolnum>7</manvolnum>

d0767ffd08bbb5c069e266710eb0462315e47e6dLennart Poettering </refmeta>

d0767ffd08bbb5c069e266710eb0462315e47e6dLennart Poettering

d0767ffd08bbb5c069e266710eb0462315e47e6dLennart Poettering <refnamediv>

d0767ffd08bbb5c069e266710eb0462315e47e6dLennart Poettering <refname>kernel-command-line</refname>

d0767ffd08bbb5c069e266710eb0462315e47e6dLennart Poettering <refpurpose>Kernel command line parameters</refpurpose>

d0767ffd08bbb5c069e266710eb0462315e47e6dLennart Poettering </refnamediv>

d0767ffd08bbb5c069e266710eb0462315e47e6dLennart Poettering

d0767ffd08bbb5c069e266710eb0462315e47e6dLennart Poettering <refsynopsisdiv>

d0767ffd08bbb5c069e266710eb0462315e47e6dLennart Poettering <para><filename>/proc/cmdline</filename></para>

d0767ffd08bbb5c069e266710eb0462315e47e6dLennart Poettering </refsynopsisdiv>

d0767ffd08bbb5c069e266710eb0462315e47e6dLennart Poettering

d0767ffd08bbb5c069e266710eb0462315e47e6dLennart Poettering <refsect1>

d0767ffd08bbb5c069e266710eb0462315e47e6dLennart Poettering <title>Description</title>

0c0cdb06c139b52ff103287f6909b3daa5b2dc54Ronny Chevalier

d0767ffd08bbb5c069e266710eb0462315e47e6dLennart Poettering <para>The kernel, the initial RAM disk (initrd) and

d0767ffd08bbb5c069e266710eb0462315e47e6dLennart Poettering basic userspace functionality may be configured at boot via

0c0cdb06c139b52ff103287f6909b3daa5b2dc54Ronny Chevalier kernel command line arguments.</para>

d0767ffd08bbb5c069e266710eb0462315e47e6dLennart Poettering

d0767ffd08bbb5c069e266710eb0462315e47e6dLennart Poettering <para>For command line parameters understood by the

0c0cdb06c139b52ff103287f6909b3daa5b2dc54Ronny Chevalier kernel please see <ulink

d0767ffd08bbb5c069e266710eb0462315e47e6dLennart Poettering url="https://www.kernel.org/doc/Documentation/kernel-parameters.txt"><filename>kernel-parameters.txt</filename></ulink>

d0767ffd08bbb5c069e266710eb0462315e47e6dLennart Poettering and

d0767ffd08bbb5c069e266710eb0462315e47e6dLennart Poettering <citerefentry><refentrytitle>bootparam</refentrytitle><manvolnum>7</manvolnum></citerefentry>.</para>

d0767ffd08bbb5c069e266710eb0462315e47e6dLennart Poettering

d0767ffd08bbb5c069e266710eb0462315e47e6dLennart Poettering <para>For command line parameters understood by the

d0767ffd08bbb5c069e266710eb0462315e47e6dLennart Poettering initial RAM disk, please see

d0767ffd08bbb5c069e266710eb0462315e47e6dLennart Poettering <citerefentry><refentrytitle>dracut.cmdline</refentrytitle><manvolnum>7</manvolnum></citerefentry>,

d0767ffd08bbb5c069e266710eb0462315e47e6dLennart Poettering or the documentation of the specific initrd

d0767ffd08bbb5c069e266710eb0462315e47e6dLennart Poettering implementation of your installation.</para>

d0767ffd08bbb5c069e266710eb0462315e47e6dLennart Poettering </refsect1>

2678031a179a9b91fc799f8ef951a548c66c4b49Lennart Poettering

dfd9cf7f0b257d38f5527989dd9315e767fbe41bZbigniew Jędrzejewski-Szmek <refsect1>

dfd9cf7f0b257d38f5527989dd9315e767fbe41bZbigniew Jędrzejewski-Szmek <title>Core OS Command Line Arguments</title>

d0767ffd08bbb5c069e266710eb0462315e47e6dLennart Poettering

d0767ffd08bbb5c069e266710eb0462315e47e6dLennart Poettering <variablelist class='kernel-commandline-options'>

<varlistentry>

<term><varname>systemd.unit=</varname></term>

<term><varname>rd.systemd.unit=</varname></term>

<term><varname>systemd.dump_core=</varname></term>

<term><varname>systemd.crash_shell=</varname></term>

<term><varname>systemd.crash_chvt=</varname></term>

<term><varname>systemd.confirm_spawn=</varname></term>

<term><varname>systemd.show_status=</varname></term>

<term><varname>systemd.log_target=</varname></term>

<term><varname>systemd.log_level=</varname></term>

<term><varname>systemd.log_color=</varname></term>

<term><varname>systemd.log_location=</varname></term>

<term><varname>systemd.default_standard_output=</varname></term>

<term><varname>systemd.default_standard_error=</varname></term>

<term><varname>systemd.setenv=</varname></term>

<listitem>

<para>Parameters understood by

the system and service manager

to control system behavior. For details see

<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>.</para>

</listitem>

</varlistentry>

<varlistentry>

<term><varname>quiet</varname></term>

<listitem>

<para>Parameter understood by

both the kernel and the system

and service manager to control

console log verbosity. For

details see

<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>.</para>

</listitem>

</varlistentry>

<varlistentry>

<term><varname>emergency</varname></term>

<term><varname>single</varname></term>

<term><varname>s</varname></term>

<term><varname>S</varname></term>

<term><varname>1</varname></term>

<term><varname>2</varname></term>

<term><varname>3</varname></term>

<term><varname>4</varname></term>

<term><varname>5</varname></term>

<listitem>

<para>Parameters understood by

the system and service

manager, as compatibility

options. For details see

<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>.</para>

</listitem>

</varlistentry>

<varlistentry>

<term><varname>locale.LANG=</varname></term>

<term><varname>locale.LANGUAGE=</varname></term>

<term><varname>locale.LC_CTYPE=</varname></term>

<term><varname>locale.LC_NUMERIC=</varname></term>

<term><varname>locale.LC_TIME=</varname></term>

<term><varname>locale.LC_COLLATE=</varname></term>

<term><varname>locale.LC_MONETARY=</varname></term>

<term><varname>locale.LC_MESSAGES=</varname></term>

<term><varname>locale.LC_PAPER=</varname></term>

<term><varname>locale.LC_NAME=</varname></term>

<term><varname>locale.LC_ADDRESS=</varname></term>

<term><varname>locale.LC_TELEPHONE=</varname></term>

<term><varname>locale.LC_MEASUREMENT=</varname></term>

<term><varname>locale.LC_IDENTIFICATION=</varname></term>

<listitem>

<para>Parameters understood by

the system and service manager

to control locale and language

settings. For details see

<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>.</para>

</listitem>

</varlistentry>

<varlistentry>

<term><varname>fsck.mode=</varname></term>

<listitem>

<para>Parameter understood by

the file system checker

services. For details see

<citerefentry><refentrytitle>systemd-fsck@.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para>

</listitem>

</varlistentry>

<varlistentry>

<term><varname>quotacheck.mode=</varname></term>

<listitem>

<para>Parameter understood by

the file quota checker

service. For details see

<citerefentry><refentrytitle>systemd-quotacheck.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para>

</listitem>

</varlistentry>

<varlistentry>

<term><varname>systemd.journald.forward_to_syslog=</varname></term>

<term><varname>systemd.journald.forward_to_kmsg=</varname></term>

<term><varname>systemd.journald.forward_to_console=</varname></term>

<listitem>

<para>Parameters understood by

the journal service. For

details see

<citerefentry><refentrytitle>systemd-journald.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para>

</listitem>

</varlistentry>

<varlistentry>

<term><varname>vconsole.keymap=</varname></term>

<term><varname>vconsole.keymap.toggle=</varname></term>

<term><varname>vconsole.font=</varname></term>

<term><varname>vconsole.font.map=</varname></term>

<term><varname>vconsole.font.unimap=</varname></term>

<listitem>

<para>Parameters understood by

the virtual console setup logic. For

details see

<citerefentry><refentrytitle>systemd-vconsole-setup.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para>

</listitem>

</varlistentry>

<varlistentry>

<term><varname>udev.log-priority=</varname></term>

<term><varname>rd.udev.log-priority=</varname></term>

<term><varname>udev.children-max=</varname></term>

<term><varname>rd.udev.children-max=</varname></term>

<term><varname>udev.exec-delay=</varname></term>

<term><varname>rd.udev.exec-delay=</varname></term>

<listitem>

<para>Parameters understood by

the device event managing daemon. For

details see

<citerefentry><refentrytitle>systemd-udevd.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para>

</listitem>

</varlistentry>

<varlistentry>

<term><varname>plymouth.enable=</varname></term>

<listitem>

<para>May be used to disable

the Plymouth boot splash. For

details see

<citerefentry><refentrytitle>plymouth</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para>

</listitem>

</varlistentry>

<varlistentry>

<term><varname>luks=</varname></term>

<term><varname>rd.luks=</varname></term>

<term><varname>luks.crypttab=</varname></term>

<term><varname>rd.luks.crypttab=</varname></term>

<term><varname>luks.uuid=</varname></term>

<term><varname>rd.luks.uuid=</varname></term>

<term><varname>luks.key=</varname></term>

<term><varname>rd.luks.key=</varname></term>

<listitem>

<para>Configures the LUKS

full-disk encryption logic at

boot. For details see

<citerefentry><refentrytitle>systemd-cryptsetup-generator</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para>

</listitem>

</varlistentry>

<varlistentry>

<term><varname>fstab=</varname></term>

<term><varname>rd.fstab=</varname></term>

<listitem>

<para>Configures the

<filename>/etc/fstab</filename>

logic at boot. For details see

<citerefentry><refentrytitle>systemd-fstab-generator</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para>

</listitem>

</varlistentry>

<varlistentry>

<term><varname>modules-load=</varname></term>

<term><varname>rd.modules-load=</varname></term>

<listitem>

<para>Load a specific kernel

module early at boot. For

details see

<citerefentry><refentrytitle>systemd-modules-load.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para>

</listitem>

</varlistentry>

</variablelist>

</refsect1>

<refsect1>

<title>See Also</title>

<para>

<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,

<citerefentry><refentrytitle>bootparam</refentrytitle><manvolnum>7</manvolnum></citerefentry>,

<citerefentry><refentrytitle>dracut.cmdline</refentrytitle><manvolnum>7</manvolnum></citerefentry>,

<citerefentry><refentrytitle>systemd-fsck@.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,

<citerefentry><refentrytitle>systemd-quotacheck.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,

<citerefentry><refentrytitle>systemd-journald.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,

<citerefentry><refentrytitle>systemd-vconsole-setup.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,

<citerefentry><refentrytitle>systemd-udevd.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,

<citerefentry><refentrytitle>plymouth</refentrytitle><manvolnum>8</manvolnum></citerefentry>,

<citerefentry><refentrytitle>systemd-cryptsetup-generator</refentrytitle><manvolnum>8</manvolnum></citerefentry>,

<citerefentry><refentrytitle>systemd-fstab-generator</refentrytitle><manvolnum>8</manvolnum></citerefentry>,

<citerefentry><refentrytitle>systemd-modules-load.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>

</para>

</refsect1>

</refentry>