112 lines
3.4 KiB
XML
112 lines
3.4 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.3//EN"
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"http://www.oasis-open.org/docbook/xml/4.3/docbookx.dtd">
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<refentry id='sulogin.8'>
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<!-- $Id: sulogin.8.xml,v 1.15 2005/11/05 17:17:30 kloczek Exp $ -->
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<refmeta>
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<refentrytitle>sulogin</refentrytitle>
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<manvolnum>8</manvolnum>
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<refmiscinfo class="sectdesc">System Management Commands</refmiscinfo>
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</refmeta>
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<refnamediv id='name'>
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<refname>sulogin</refname>
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<refpurpose>Single-user login</refpurpose>
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</refnamediv>
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<refsect1 id='syntax'>
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<title>SYNTAX</title>
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<para><command>sulogin</command> [<emphasis remap='I'>tty-device</emphasis>]
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</para>
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</refsect1>
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<refsect1 id='description'>
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<title>DESCRIPTION</title>
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<para>
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<command>sulogin</command> is invoked by <command>init</command> prior
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to allowing the user access to the system when in single user mode.
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This feature may only be available on certain systems where
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<command>init</command> has been modified accordingly, or where the
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<filename>/etc/inittab</filename> has an entry for a single user
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login.
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</para>
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<para>The user is prompted</para>
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<para>Type control-d to proceed with normal startup,
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<!-- .br -->
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(or give root password for system maintenance):
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</para>
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<para>
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Input and output will be performed with the standard file descriptors
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unless the optional device name argument is provided.
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</para>
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<para>
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If the user enters the correct root password, a login session is
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initiated. When <emphasis>EOF</emphasis> is pressed instead, the
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system enters multi-user mode.
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</para>
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<para>
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After the user exits the single-user shell, or presses
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<emphasis>EOF</emphasis>, the system begins the initialization process
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required to enter multi-user mode.
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</para>
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</refsect1>
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<refsect1 id='caveats'>
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<title>CAVEATS</title>
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<para>
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This command can only be used if <command>init</command> has been
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modified to call <command>sulogin</command> instead of
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<filename>/bin/sh</filename>, or if the user has set the <emphasis
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remap='I'>inittab</emphasis> to support a single user login. For
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example, the line:
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</para>
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<para>co:s:respawn:/etc/sulogin /dev/console</para>
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<para>should execute the sulogin command in single user mode.</para>
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<para>
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As complete an environment as possible is created. However, various
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devices may be unmounted or uninitialized and many of the user
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commands may be unavailable or nonfunctional as a result.
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</para>
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</refsect1>
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<refsect1 id='files'>
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<title>FILES</title>
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<variablelist>
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<varlistentry>
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<term><filename>/etc/passwd</filename></term>
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<listitem>
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<para>user account information</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><filename>/etc/shadow</filename></term>
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<listitem>
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<para>secure user account information</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</refsect1>
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<refsect1 id='see_also'>
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<title>SEE ALSO</title>
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<para>
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<citerefentry>
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<refentrytitle>login</refentrytitle><manvolnum>1</manvolnum>
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</citerefentry>,
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<citerefentry>
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<refentrytitle>sh</refentrytitle><manvolnum>1</manvolnum>
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</citerefentry>,
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<citerefentry>
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<refentrytitle>init</refentrytitle><manvolnum>8</manvolnum>
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</citerefentry>.
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</para>
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</refsect1>
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</refentry>
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