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man: document all kernel command line options we understand
2012-06-22 03:35:52 +04:00
<?xml version='1.0'?> <!--*-nxml-*-->
<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
<!--
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Copyright 2012 Lennart Poettering
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<refentry id="kernel-command-line">
<refentryinfo>
<title>kernel-command-line</title>
<productname>systemd</productname>
<authorgroup>
<author>
<contrib>Developer</contrib>
<firstname>Lennart</firstname>
<surname>Poettering</surname>
<email>lennart@poettering.net</email>
</author>
</authorgroup>
</refentryinfo>
<refmeta>
<refentrytitle>kernel-command-line</refentrytitle>
<manvolnum>7</manvolnum>
</refmeta>
<refnamediv>
<refname>kernel-command-line</refname>
man: reword man page titles Make sure the man page titles are similar in style and capitalization so that our man page index looks pretty.
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<refpurpose>Kernel command line parameters</refpurpose>
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</refnamediv>
<refsynopsisdiv>
<para><filename>/proc/cmdline</filename></para>
</refsynopsisdiv>
<refsect1>
<title>Description</title>
<para>The kernel, the initial RAM disk (initrd) and
basic userspace functionality may be configured at boot via
kernel command line arguments.</para>
<para>For command line parameters understood by the
kernel please see <ulink
man: add reference to bootparam(7) even though it is terribly out of date
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url="https://www.kernel.org/doc/Documentation/kernel-parameters.txt"><filename>kernel-parameters.txt</filename></ulink>
and
<citerefentry><refentrytitle>bootparam</refentrytitle><manvolnum>7</manvolnum></citerefentry>.</para>
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<para>For command line paramaters understood by the
initial RAM disk, please see
man: mention other initrd implementations in kernel-command-line(7)
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<citerefentry><refentrytitle>dracut.cmdline</refentrytitle><manvolnum>7</manvolnum></citerefentry>,
or the documentation of the specific initrd
implementation of your installation.</para>
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</refsect1>
<refsect1>
<title>Core OS Command Line Arguments</title>
<variablelist>
<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
man: fix a bunch of typos in docs https://bugs.freedesktop.org/show_bug.cgi?id=54501
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to control system behavior. For details see
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<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>.</para>
</listitem>
</varlistentry>
<varlistentry>
<term><varname>quiet</varname></term>
<listitem>
man: minor typo fixes
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<para>Parameter understood by
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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>
man: minor typo fixes
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<para>Parameter understood by
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the file system checker
services. For details see
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<citerefentry><refentrytitle>systemd-fsck@.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para>
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</listitem>
</varlistentry>
<varlistentry>
<term><varname>quotacheck.mode=</varname></term>
<listitem>
man: minor typo fixes
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<para>Parameter understood by
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the file quota checker
service. For details see
units: rename fsck@.service to systemd-fsck@.service The rule is that units that encapsulate our own code are prefixed with "systemd-". Since the fsck units invoke our own code, hence add the missing prefix. Since a long long time the fsck units didn't invoke the naked fsck binaries anymore, and it is unlikely that this well ever change. On the opposite: the code in systemd-fsck will probably get more complex over time to handle fsck progress to plymouth forwarding. Same for quotacheck (but not quotaon!)
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<citerefentry><refentrytitle>systemd-quotacheck.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para>
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</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>
cryptsetup: allow configuration of LUKS disks via the kernel cmdline This generalizes a bit of the functionality already available in dracut.
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<term><varname>udev.children-max=</varname></term>
man: document all kernel command line options we understand
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<term><varname>rd.udev.children-max=</varname></term>
modules-load: parse driver=/rd.driver= kernel command line option This generalizes logic that already has been available in dracut before.
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<term><varname>udev.exec-delay=</varname></term>
<term><varname>rd.udev.exec-delay=</varname></term>
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<listitem>
<para>Parameters understood by
the device event managing daemon. For
details see
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<citerefentry><refentrytitle>systemd-udevd.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para>
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</listitem>
</varlistentry>
cryptsetup: allow configuration of LUKS disks via the kernel cmdline This generalizes a bit of the functionality already available in dracut.
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<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>
<listitem>
<para>Configures the LUKS
full-disk encryption logic at
boot. For details see
fstab-generator: support fstab=/rd.fstab= kernel cmdline This generalizes functionality already available in dracut.
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<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>
cryptsetup: allow configuration of LUKS disks via the kernel cmdline This generalizes a bit of the functionality already available in dracut.
2012-06-22 12:11:06 +04:00
</listitem>
</varlistentry>
modules-load: parse driver=/rd.driver= kernel command line option This generalizes logic that already has been available in dracut before.
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<varlistentry>
man: update man pages to reflect the driver= to load-modules= rename
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<term><varname>modules-load=</varname></term>
<term><varname>rd.modules-load=</varname></term>
modules-load: parse driver=/rd.driver= kernel command line option This generalizes logic that already has been available in dracut before.
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<listitem>
<para>Load a specific kernel
man: typo
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module early at boot. For
modules-load: parse driver=/rd.driver= kernel command line option This generalizes logic that already has been available in dracut before.
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details see
<citerefentry><refentrytitle>systemd-modules-load.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para>
</listitem>
</varlistentry>
cryptsetup: allow configuration of LUKS disks via the kernel cmdline This generalizes a bit of the functionality already available in dracut.
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</variablelist>
man: document all kernel command line options we understand
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</refsect1>
<refsect1>
<title>See Also</title>
<para>
<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
man: add more references to k-c-l(7)
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<citerefentry><refentrytitle>bootparam</refentrytitle><manvolnum>7</manvolnum></citerefentry>,
man: document all kernel command line options we understand
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<citerefentry><refentrytitle>dracut.cmdline</refentrytitle><manvolnum>7</manvolnum></citerefentry>,
man: document systemd-fsck
2012-06-27 02:37:36 +04:00
<citerefentry><refentrytitle>systemd-fsck@.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
units: rename fsck@.service to systemd-fsck@.service The rule is that units that encapsulate our own code are prefixed with "systemd-". Since the fsck units invoke our own code, hence add the missing prefix. Since a long long time the fsck units didn't invoke the naked fsck binaries anymore, and it is unlikely that this well ever change. On the opposite: the code in systemd-fsck will probably get more complex over time to handle fsck progress to plymouth forwarding. Same for quotacheck (but not quotaon!)
2012-06-25 15:47:45 +04:00
<citerefentry><refentrytitle>systemd-quotacheck.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
man: document all kernel command line options we understand
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<citerefentry><refentrytitle>systemd-journald.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
<citerefentry><refentrytitle>systemd-vconsole-setup.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
man: fix references to udev man page
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<citerefentry><refentrytitle>systemd-udevd.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
man: add more links to kernel-command-line(7)
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<citerefentry><refentrytitle>plymouth</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
man: add more references to k-c-l(7)
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<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>
man: document all kernel command line options we understand
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</para>
</refsect1>
</refentry>
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