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systemd/man/systemd-getty-generator.xml

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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">
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This file is part of systemd.
Copyright 2012 Lennart Poettering
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<refentry id="systemd-getty-generator">
<refentryinfo>
<title>systemd-getty-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-getty-generator</refentrytitle>
<manvolnum>8</manvolnum>
</refmeta>
<refnamediv>
<refname>systemd-getty-generator</refname>
<refpurpose>Generator for enabling getty instances on
the console</refpurpose>
</refnamediv>
<refsynopsisdiv>
<para><filename>/usr/lib/systemd/system-generators/systemd-getty-generator</filename></para>
</refsynopsisdiv>
<refsect1>
<title>Description</title>
<para><filename>systemd-getty-generator</filename> is
a generator that automatically instantiates
<filename>serial-getty@.service</filename> on the
kernel console <filename>/dev/console</filename> if
that is not directed to the virtual console
subsystem. It will also instantiate
<filename>serial-getty@.service</filename> instances
for virtualizer consoles, if execution in a
virtualized environment is detected. This should
ensure that the user is shown a login prompt at the
right place, regardless in which environment the
system is started. For example, it is sufficient to
redirect the kernel console with a kernel command line
argument such as <varname>console=</varname> to get
both kernel messages and a getty prompt on a serial
TTY. See <ulink
url="https://www.kernel.org/doc/Documentation/kernel-parameters.txt"><filename>kernel-parameters.txt</filename></ulink>
for more information on the
<varname>console=</varname> kernel parameter.</para>
<para><filename>systemd-getty-generator</filename>
implements the <ulink
url="http://www.freedesktop.org/wiki/Software/systemd/Generators">generator
specification</ulink>.</para>
<para>Further information about configuration of
gettys you may find in <ulink
url="http://0pointer.de/blog/projects/serial-console.html">systemd
for Administrators, Part XVI: Gettys on Serial
Consoles (and Elsewhere)</ulink>.</para>
</refsect1>
<refsect1>
<title>See Also</title>
<para>
<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
<citerefentry><refentrytitle>agetty</refentrytitle><manvolnum>8</manvolnum></citerefentry>
</para>
</refsect1>
</refentry>