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-<?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">
-<!--
- This file is part of systemd.
-
- Copyright 2014 Lennart Poettering
-
- systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 2.1 of the License, or
- (at your option) any later version.
-
- systemd is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with systemd; If not, see <http://www.gnu.org/licenses/>.
--->
-<refentry id="systemd-debug-generator">
-
- <refentryinfo>
- <title>systemd-debug-generator</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>systemd-debug-generator</refentrytitle>
- <manvolnum>8</manvolnum>
- </refmeta>
-
- <refnamediv>
- <refname>systemd-debug-generator</refname>
- <refpurpose>Generator for enabling a runtime debug shell and
- masking specific units at boot</refpurpose>
- </refnamediv>
-
- <refsynopsisdiv>
- <para><filename>/usr/lib/systemd/system-generators/systemd-debug-generator</filename></para>
- </refsynopsisdiv>
-
- <refsect1>
- <title>Description</title>
-
- <para><filename>systemd-debug-generator</filename> is a generator
- that reads the kernel command line and understands three
- options:</para>
-
- <para>If the <option>systemd.mask=</option> option is specified
- and followed by a unit name, this unit is masked for the runtime,
- similar to the effect of
- <citerefentry><refentrytitle>systemctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>'s
- <command>mask</command> command. This is useful to boot with
- certain units removed from the initial boot transaction for
- debugging system startup. May be specified more than once.</para>
-
- <para>If the <option>systemd.wants=</option> option is specified
- and followed by a unit name, a start job for this unit is added to
- the initial transaction. This is useful to start one or more
- additional units at boot. May be specified more than once.</para>
-
- <para>If the <option>systemd.debug-shell</option> option is
- specified, the debug shell service
- <literal>debug-shell.service</literal> is pulled into the boot
- transaction. It will spawn a debug shell on tty9 during early
- system startup. Note that the shell may also be turned on
- persistently by enabling it with
- <citerefentry><refentrytitle>systemctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>'s
- <command>enable</command> command.</para>
-
- <para><filename>systemd-debug-generator</filename> implements
- <citerefentry><refentrytitle>systemd.generator</refentrytitle><manvolnum>7</manvolnum></citerefentry>.</para>
- </refsect1>
-
- <refsect1>
- <title>See Also</title>
- <para>
- <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
- <citerefentry><refentrytitle>systemctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
- <citerefentry><refentrytitle>kernel-command-line</refentrytitle><manvolnum>7</manvolnum></citerefentry>
- </para>
- </refsect1>
-
-</refentry>