projects / thirdparty / systemd.git / blame
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1 | <?xml version='1.0'?> <!--*-nxml-*--> |
| 2 | <!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN" | |
| 3 | "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd"> | |
| 4 | ||
| 5 | <!-- | |
| 6 | This file is part of systemd. | |
| 7 | ||
| 8 | Copyright 2012 Lennart Poettering | |
| 9 | ||
| 10 | systemd is free software; you can redistribute it and/or modify it | |
| 11 | under the terms of the GNU Lesser General Public License as published by | |
| 12 | the Free Software Foundation; either version 2.1 of the License, or | |
| 13 | (at your option) any later version. | |
| 14 | ||
| 15 | systemd is distributed in the hope that it will be useful, but | |
| 16 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 18 | Lesser General Public License for more details. | |
| 19 | ||
| 20 | You should have received a copy of the GNU Lesser General Public License | |
| 21 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
| 22 | --> | |
| 23 | ||
| 24 | <refentry id="kernel-command-line"> | |
| 25 | ||
| 26 | <refentryinfo> | |
| 27 | <title>kernel-command-line</title> | |
| 28 | <productname>systemd</productname> | |
| 29 | ||
| 30 | <authorgroup> | |
| 31 | <author> | |
| 32 | <contrib>Developer</contrib> | |
| 33 | <firstname>Lennart</firstname> | |
| 34 | <surname>Poettering</surname> | |
| 35 | <email>lennart@poettering.net</email> | |
| 36 | </author> | |
| 37 | </authorgroup> | |
| 38 | </refentryinfo> | |
| 39 | ||
| 40 | <refmeta> | |
| 41 | <refentrytitle>kernel-command-line</refentrytitle> | |
| 42 | <manvolnum>7</manvolnum> | |
| 43 | </refmeta> | |
| 44 | ||
| 45 | <refnamediv> | |
| 46 | <refname>kernel-command-line</refname> | |
| 34511ca7 | 47 | <refpurpose>Kernel command line parameters</refpurpose> |
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48 | </refnamediv> |
| 49 | ||
| 50 | <refsynopsisdiv> | |
| 51 | <para><filename>/proc/cmdline</filename></para> | |
| 52 | </refsynopsisdiv> | |
| 53 | ||
| 54 | <refsect1> | |
| 55 | <title>Description</title> | |
| 56 | ||
| 57 | <para>The kernel, the initial RAM disk (initrd) and | |
| 58 | basic userspace functionality may be configured at boot via | |
| 59 | kernel command line arguments.</para> | |
| 60 | ||
| 61 | <para>For command line parameters understood by the | |
| 62 | kernel please see <ulink | |
| 99166f29 LP |
63 | url="https://www.kernel.org/doc/Documentation/kernel-parameters.txt"><filename>kernel-parameters.txt</filename></ulink> |
| 64 | and | |
| 65 | <citerefentry><refentrytitle>bootparam</refentrytitle><manvolnum>7</manvolnum></citerefentry>.</para> | |
| c66e7bc7 LP |
66 | |
| 67 | <para>For command line paramaters understood by the | |
| 68 | initial RAM disk, please see | |
| 2a91f5f0 LP |
69 | <citerefentry><refentrytitle>dracut.cmdline</refentrytitle><manvolnum>7</manvolnum></citerefentry>, |
| 70 | or the documentation of the specific initrd | |
| 71 | implementation of your installation.</para> | |
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72 | </refsect1> |
| 73 | ||
| 74 | <refsect1> | |
| 75 | <title>Core OS Command Line Arguments</title> | |
| 76 | ||
| 77 | <variablelist> | |
| 78 | <varlistentry> | |
| 79 | <term><varname>systemd.unit=</varname></term> | |
| 80 | <term><varname>rd.systemd.unit=</varname></term> | |
| 81 | <term><varname>systemd.dump_core=</varname></term> | |
| 82 | <term><varname>systemd.crash_shell=</varname></term> | |
| 83 | <term><varname>systemd.crash_chvt=</varname></term> | |
| 84 | <term><varname>systemd.confirm_spawn=</varname></term> | |
| 85 | <term><varname>systemd.show_status=</varname></term> | |
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86 | <term><varname>systemd.log_target=</varname></term> |
| 87 | <term><varname>systemd.log_level=</varname></term> | |
| 88 | <term><varname>systemd.log_color=</varname></term> | |
| 89 | <term><varname>systemd.log_location=</varname></term> | |
| 90 | <term><varname>systemd.default_standard_output=</varname></term> | |
| 91 | <term><varname>systemd.default_standard_error=</varname></term> | |
| 92 | <term><varname>systemd.setenv=</varname></term> | |
| 93 | <listitem> | |
| 94 | <para>Parameters understood by | |
| 95 | the system and service manager | |
| 96 | to control system behaviour. For details see | |
| 97 | <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>.</para> | |
| 98 | </listitem> | |
| 99 | </varlistentry> | |
| 100 | ||
| 101 | <varlistentry> | |
| 102 | <term><varname>quiet</varname></term> | |
| 103 | <listitem> | |
| ccb94c88 | 104 | <para>Parameter understood by |
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105 | both the kernel and the system |
| 106 | and service manager to control | |
| 107 | console log verbosity. For | |
| 108 | details see | |
| 109 | <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>.</para> | |
| 110 | </listitem> | |
| 111 | </varlistentry> | |
| 112 | ||
| 113 | <varlistentry> | |
| 114 | <term><varname>emergency</varname></term> | |
| 115 | <term><varname>single</varname></term> | |
| 116 | <term><varname>s</varname></term> | |
| 117 | <term><varname>S</varname></term> | |
| 118 | <term><varname>1</varname></term> | |
| 119 | <term><varname>2</varname></term> | |
| 120 | <term><varname>3</varname></term> | |
| 121 | <term><varname>4</varname></term> | |
| 122 | <term><varname>5</varname></term> | |
| 123 | <listitem> | |
| 124 | <para>Parameters understood by | |
| 125 | the system and service | |
| 126 | manager, as compatibility | |
| 127 | options. For details see | |
| 128 | <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>.</para> | |
| 129 | </listitem> | |
| 130 | </varlistentry> | |
| 131 | ||
| 132 | <varlistentry> | |
| 133 | <term><varname>locale.LANG=</varname></term> | |
| 134 | <term><varname>locale.LANGUAGE=</varname></term> | |
| 135 | <term><varname>locale.LC_CTYPE=</varname></term> | |
| 136 | <term><varname>locale.LC_NUMERIC=</varname></term> | |
| 137 | <term><varname>locale.LC_TIME=</varname></term> | |
| 138 | <term><varname>locale.LC_COLLATE=</varname></term> | |
| 139 | <term><varname>locale.LC_MONETARY=</varname></term> | |
| 140 | <term><varname>locale.LC_MESSAGES=</varname></term> | |
| 141 | <term><varname>locale.LC_PAPER=</varname></term> | |
| 142 | <term><varname>locale.LC_NAME=</varname></term> | |
| 143 | <term><varname>locale.LC_ADDRESS=</varname></term> | |
| 144 | <term><varname>locale.LC_TELEPHONE=</varname></term> | |
| 145 | <term><varname>locale.LC_MEASUREMENT=</varname></term> | |
| 146 | <term><varname>locale.LC_IDENTIFICATION=</varname></term> | |
| 147 | <listitem> | |
| 148 | <para>Parameters understood by | |
| 149 | the system and service manager | |
| 150 | to control locale and language | |
| 151 | settings. For details see | |
| 152 | <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>.</para> | |
| 153 | </listitem> | |
| 154 | </varlistentry> | |
| 155 | ||
| 156 | <varlistentry> | |
| 157 | <term><varname>fsck.mode=</varname></term> | |
| 158 | ||
| 159 | <listitem> | |
| ccb94c88 | 160 | <para>Parameter understood by |
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161 | the file system checker |
| 162 | services. For details see | |
| a32f224a | 163 | <citerefentry><refentrytitle>systemd-fsck@.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para> |
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164 | </listitem> |
| 165 | </varlistentry> | |
| 166 | ||
| 167 | <varlistentry> | |
| 168 | <term><varname>quotacheck.mode=</varname></term> | |
| 169 | ||
| 170 | <listitem> | |
| ccb94c88 | 171 | <para>Parameter understood by |
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172 | the file quota checker |
| 173 | service. For details see | |
| 93a1d735 | 174 | <citerefentry><refentrytitle>systemd-quotacheck.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para> |
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175 | </listitem> |
| 176 | </varlistentry> | |
| 177 | ||
| 178 | <varlistentry> | |
| 179 | <term><varname>systemd.journald.forward_to_syslog=</varname></term> | |
| 180 | <term><varname>systemd.journald.forward_to_kmsg=</varname></term> | |
| 181 | <term><varname>systemd.journald.forward_to_console=</varname></term> | |
| 182 | ||
| 183 | <listitem> | |
| 184 | <para>Parameters understood by | |
| 185 | the journal service. For | |
| 186 | details see | |
| 187 | <citerefentry><refentrytitle>systemd-journald.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para> | |
| 188 | </listitem> | |
| 189 | </varlistentry> | |
| 190 | ||
| 191 | <varlistentry> | |
| 192 | <term><varname>vconsole.keymap=</varname></term> | |
| 193 | <term><varname>vconsole.keymap.toggle=</varname></term> | |
| 194 | <term><varname>vconsole.font=</varname></term> | |
| 195 | <term><varname>vconsole.font.map=</varname></term> | |
| 196 | <term><varname>vconsole.font.unimap=</varname></term> | |
| 197 | ||
| 198 | <listitem> | |
| 199 | <para>Parameters understood by | |
| 200 | the virtual console setup logic. For | |
| 201 | details see | |
| 202 | <citerefentry><refentrytitle>systemd-vconsole-setup.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para> | |
| 203 | </listitem> | |
| 204 | </varlistentry> | |
| 205 | ||
| 206 | <varlistentry> | |
| 207 | <term><varname>udev.log-priority=</varname></term> | |
| c66e7bc7 | 208 | <term><varname>rd.udev.log-priority=</varname></term> |
| 66a78c2b | 209 | <term><varname>udev.children-max=</varname></term> |
| c66e7bc7 | 210 | <term><varname>rd.udev.children-max=</varname></term> |
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211 | <term><varname>udev.exec-delay=</varname></term> |
| 212 | <term><varname>rd.udev.exec-delay=</varname></term> | |
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213 | |
| 214 | <listitem> | |
| 215 | <para>Parameters understood by | |
| 216 | the device event managing daemon. For | |
| 217 | details see | |
| c7a5e7cf | 218 | <citerefentry><refentrytitle>systemd-udevd.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para> |
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219 | </listitem> |
| 220 | </varlistentry> | |
| c66e7bc7 | 221 | |
| 66a78c2b LP |
222 | <varlistentry> |
| 223 | <term><varname>plymouth.enable=</varname></term> | |
| 224 | ||
| 225 | <listitem> | |
| 226 | <para>May be used to disable | |
| 227 | the Plymouth boot splash. For | |
| 228 | details see | |
| 229 | <citerefentry><refentrytitle>plymouth</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para> | |
| 230 | </listitem> | |
| 231 | </varlistentry> | |
| 232 | ||
| 233 | <varlistentry> | |
| 234 | <term><varname>luks=</varname></term> | |
| 235 | <term><varname>rd.luks=</varname></term> | |
| 236 | <term><varname>luks.crypttab=</varname></term> | |
| 237 | <term><varname>rd.luks.crypttab=</varname></term> | |
| 238 | <term><varname>luks.uuid=</varname></term> | |
| 239 | <term><varname>rd.luks.uuid=</varname></term> | |
| 240 | ||
| 241 | <listitem> | |
| 242 | <para>Configures the LUKS | |
| 243 | full-disk encryption logic at | |
| 244 | boot. For details see | |
| 94734142 LP |
245 | <citerefentry><refentrytitle>systemd-cryptsetup-generator</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para> |
| 246 | </listitem> | |
| 247 | </varlistentry> | |
| 248 | ||
| 249 | <varlistentry> | |
| 250 | <term><varname>fstab=</varname></term> | |
| 251 | <term><varname>rd.fstab=</varname></term> | |
| 252 | ||
| 253 | <listitem> | |
| 254 | <para>Configures the | |
| 255 | <filename>/etc/fstab</filename> | |
| 256 | logic at boot. For details see | |
| 257 | <citerefentry><refentrytitle>systemd-fstab-generator</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para> | |
| 66a78c2b LP |
258 | </listitem> |
| 259 | </varlistentry> | |
| 260 | ||
| 03658d4f | 261 | <varlistentry> |
| 627e4bb2 LP |
262 | <term><varname>modules-load=</varname></term> |
| 263 | <term><varname>rd.modules-load=</varname></term> | |
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264 | |
| 265 | <listitem> | |
| 266 | <para>Load a specific kernel | |
| 97f4e887 | 267 | module early at boot. For |
| 03658d4f LP |
268 | details see |
| 269 | <citerefentry><refentrytitle>systemd-modules-load.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para> | |
| 270 | </listitem> | |
| 271 | </varlistentry> | |
| 272 | ||
| 66a78c2b | 273 | </variablelist> |
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274 | |
| 275 | </refsect1> | |
| 276 | ||
| 277 | <refsect1> | |
| 278 | <title>See Also</title> | |
| 279 | <para> | |
| 280 | <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>, | |
| eab367b9 | 281 | <citerefentry><refentrytitle>bootparam</refentrytitle><manvolnum>7</manvolnum></citerefentry>, |
| c66e7bc7 | 282 | <citerefentry><refentrytitle>dracut.cmdline</refentrytitle><manvolnum>7</manvolnum></citerefentry>, |
| a32f224a | 283 | <citerefentry><refentrytitle>systemd-fsck@.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>, |
| 93a1d735 | 284 | <citerefentry><refentrytitle>systemd-quotacheck.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>, |
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285 | <citerefentry><refentrytitle>systemd-journald.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>, |
| 286 | <citerefentry><refentrytitle>systemd-vconsole-setup.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>, | |
| c7a5e7cf | 287 | <citerefentry><refentrytitle>systemd-udevd.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>, |
| 2488799b | 288 | <citerefentry><refentrytitle>plymouth</refentrytitle><manvolnum>8</manvolnum></citerefentry>, |
| eab367b9 LP |
289 | <citerefentry><refentrytitle>systemd-cryptsetup-generator</refentrytitle><manvolnum>8</manvolnum></citerefentry>, |
| 290 | <citerefentry><refentrytitle>systemd-fstab-generator</refentrytitle><manvolnum>8</manvolnum></citerefentry>, | |
| 291 | <citerefentry><refentrytitle>systemd-modules-load.service</refentrytitle><manvolnum>8</manvolnum></citerefentry> | |
| c66e7bc7 LP |
292 | </para> |
| 293 | </refsect1> | |
| 294 | ||
| 295 | </refentry> |