mirror of
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221 lines
7.8 KiB
XML
221 lines
7.8 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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"http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
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<!ENTITY % general-entities SYSTEM "../general.ent">
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%general-entities;
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]>
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<sect1 id="ch-system-sysvinit" role="wrap" revision="sysv">
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<?dbhtml filename="sysvinit.html"?>
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<sect1info condition="script">
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<productname>sysvinit</productname>
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<productnumber>&sysvinit-version;</productnumber>
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<address>&sysvinit-url;</address>
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</sect1info>
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<title>Sysvinit-&sysvinit-version;</title>
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<indexterm zone="ch-system-sysvinit">
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<primary sortas="a-Sysvinit">Sysvinit</primary>
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</indexterm>
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<sect2 role="package">
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<title/>
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<para>The Sysvinit package contains programs for controlling the startup,
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running, and shutdown of the system.</para>
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<segmentedlist>
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<segtitle>&buildtime;</segtitle>
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<segtitle>&diskspace;</segtitle>
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<seglistitem>
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<seg>&sysvinit-fin-sbu;</seg>
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<seg>&sysvinit-fin-du;</seg>
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</seglistitem>
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</segmentedlist>
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</sect2>
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<sect2 role="installation">
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<title>Installation of Sysvinit</title>
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<!--
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<para>When run-levels are changed (for example, when halting the
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system), <command>init</command> sends termination signals to those
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processes that <command>init</command> itself started and that should
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not be running in the new run-level. While doing this,
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<command>init</command> outputs messages like <quote>Sending processes
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the TERM signal</quote> which seem to imply that it is sending these
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signals to all currently running processes. To avoid this
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misinterpretation, modify the source so that these messages read like
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<quote>Sending processes configured via /etc/inittab the TERM signal</quote>
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instead:</para>
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<screen><userinput remap="pre">sed -i 's@Sending processes@& configured via /etc/inittab@g' src/init.c</userinput></screen>
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<para>Maintained versions of the <command>wall</command>,
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<command>mountpoint</command>, <command>last</command>,
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<command>mesg</command>, <command>sulogin</command>, and
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<command>utmpdump</command> programs were installed earlier by Util-linux.
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Suppress the installation of Sysvinit's versions of these programs and
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their man pages:</para>
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<screen><userinput remap="make">sed -ri -e '/utmpdump/d' \
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-e '/mountpoint/d' \
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-e '/mesg/d' \
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-e 's/= sulogin(\.8)?/=/' src/Makefile</userinput></screen>
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-->
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<para>First, apply a patch that removes several programs installed by other
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packages, clarifies a message, and fixes a compiler warning:</para>
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<screen><userinput remap="pre">patch -Np1 -i ../&sysvinit-consolidated-patch;</userinput></screen>
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<para>Compile the package:</para>
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<screen><userinput remap="make">make</userinput></screen>
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<para>This package does not come with a test suite.</para>
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<para>Install the package:</para>
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<screen><userinput remap="install">make install</userinput></screen>
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</sect2>
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<sect2 id="contents-sysvinit" role="content">
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<title>Contents of Sysvinit</title>
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<segmentedlist>
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<segtitle>Installed programs</segtitle>
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<seglistitem>
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<seg>bootlogd, fstab-decode, halt, init, killall5,
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poweroff (link to halt), reboot (link to halt), runlevel,
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shutdown, and telinit (link to init)</seg>
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</seglistitem>
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</segmentedlist>
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<variablelist>
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<bridgehead renderas="sect3">Short Descriptions</bridgehead>
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<?dbfo list-presentation="list"?>
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<?dbhtml list-presentation="table"?>
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<varlistentry id="bootlogd">
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<term><command>bootlogd</command></term>
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<listitem>
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<para>Logs boot messages to a log file</para>
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<indexterm zone="ch-system-sysvinit bootlogd">
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<primary sortas="b-bootlogd">bootlogd</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="fstab-decode">
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<term><command>fstab-decode</command></term>
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<listitem>
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<para>Runs a command with fstab-encoded arguments</para>
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<indexterm zone="ch-system-sysvinit fstab-decode">
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<primary sortas="b-fstab-decode">fstab-decode</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="halt-sysv">
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<term><command>halt</command></term>
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<listitem>
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<para>Normally invokes <command>shutdown</command> with the
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<parameter>-h</parameter> option, but when already in run-level 0,
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it tells the kernel to halt the system; it notes in the
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file <filename>/var/log/wtmp</filename> that the system is
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going down</para>
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<indexterm zone="ch-system-sysvinit halt-sysv">
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<primary sortas="b-halt">halt</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="init-sysv">
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<term><command>init</command></term>
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<listitem>
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<para>The first process to be started when the kernel has initialized
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the hardware; it takes over the boot process and starts all the
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processes specified in its configuration file</para>
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<indexterm zone="ch-system-sysvinit init-sysv">
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<primary sortas="b-init">init</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="killall5">
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<term><command>killall5</command></term>
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<listitem>
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<para>Sends a signal to all processes, except the processes in its own
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session; it will not kill its parent shell</para>
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<indexterm zone="ch-system-sysvinit killall5">
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<primary sortas="b-killall5">killall5</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="poweroff-sysv">
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<term><command>poweroff</command></term>
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<listitem>
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<para>Tells the kernel to halt the system and switch off the computer
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(see <command>halt</command>)</para>
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<indexterm zone="ch-system-sysvinit poweroff-sysv">
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<primary sortas="b-poweroff">poweroff</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="reboot-sysv">
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<term><command>reboot</command></term>
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<listitem>
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<para>Tells the kernel to reboot the system (see
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<command>halt</command>)</para>
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<indexterm zone="ch-system-sysvinit reboot-sysv">
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<primary sortas="b-reboot">reboot</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="runlevel-sysv">
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<term><command>runlevel</command></term>
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<listitem>
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<para>Reports the previous and the current run-level, as noted in the
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last run-level record in <filename>/run/utmp</filename></para>
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<indexterm zone="ch-system-sysvinit runlevel-sysv">
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<primary sortas="b-runlevel">runlevel</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="shutdown-sysv">
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<term><command>shutdown</command></term>
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<listitem>
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<para>Brings the system down in a secure way, signaling all processes
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and notifying all logged-in users</para>
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<indexterm zone="ch-system-sysvinit shutdown-sysv">
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<primary sortas="b-shutdown">shutdown</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="telinit-sysv">
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<term><command>telinit</command></term>
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<listitem>
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<para>Tells <command>init</command> which run-level to change to</para>
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<indexterm zone="ch-system-sysvinit telinit-sysv">
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<primary sortas="b-telinit">telinit</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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</variablelist>
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</sect2>
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</sect1>
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