source: chapter06/sysvinit.xml@ 2f25d9e

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Last change on this file since 2f25d9e was 2ca8941, checked in by Matthew Burgess <matthew@…>, 11 years ago

Remove trailing whitespace from all files.

git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@10121 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

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[673b0d8]1<?xml version="1.0" encoding="ISO-8859-1"?>
[b06ca36]2<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
3 "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
[673b0d8]4 <!ENTITY % general-entities SYSTEM "../general.ent">
5 %general-entities;
6]>
[ddd5542]7
[81fd230]8<sect1 id="ch-system-sysvinit" role="wrap">
[ddd5542]9 <?dbhtml filename="sysvinit.html"?>
10
[e747759]11 <sect1info condition="script">
12 <productname>sysvinit</productname>
13 <productnumber>&sysvinit-version;</productnumber>
14 <address>&sysvinit-url;</address>
15 </sect1info>
16
[ddd5542]17 <title>Sysvinit-&sysvinit-version;</title>
18
19 <indexterm zone="ch-system-sysvinit">
20 <primary sortas="a-Sysvinit">Sysvinit</primary>
21 </indexterm>
22
23 <sect2 role="package">
24 <title/>
25
26 <para>The Sysvinit package contains programs for controlling the startup,
27 running, and shutdown of the system.</para>
28
29 <segmentedlist>
30 <segtitle>&buildtime;</segtitle>
31 <segtitle>&diskspace;</segtitle>
32
33 <seglistitem>
[e4a5635]34 <seg>&sysvinit-ch6-sbu;</seg>
35 <seg>&sysvinit-ch6-du;</seg>
[ddd5542]36 </seglistitem>
37 </segmentedlist>
38
39 </sect2>
40
41 <sect2 role="installation">
42 <title>Installation of Sysvinit</title>
43
44 <para>When run-levels are changed (for example, when halting the
45 system), <command>init</command> sends termination signals to those
46 processes that <command>init</command> itself started and that should
47 not be running in the new run-level. While doing this,
48 <command>init</command> outputs messages like <quote>Sending processes
49 the TERM signal</quote> which seem to imply that it is sending these
50 signals to all currently running processes. To avoid this
51 misinterpretation, modify the source so that these messages read like
[12a2975c]52 <quote>Sending processes configured via /etc/inittab the TERM signal</quote>
[ddd5542]53 instead:</para>
[73aedd1d]54
[9f5aaf7]55<screen><userinput remap="pre">sed -i 's@Sending processes@&amp; configured via /etc/inittab@g' src/init.c</userinput></screen>
[73aedd1d]56
[4322222]57 <para>Maintained versions of the <command>wall</command>,
58 <command>mountpoint</command>, and <command>utmpdump</command> programs were
[e1428f3]59 installed earlier by Util-linux. Suppress the installation of Sysvinit's
[eb797aa]60 versions of these programs and their man pages:</para>
[e38671e]61
[4322222]62<screen><userinput remap="make">sed -i -e '/utmpdump/d' \
[2ca8941]63 -e '/mountpoint/d' src/Makefile</userinput></screen>
[e38671e]64
[ddd5542]65 <para>Compile the package:</para>
[73aedd1d]66
[0445a3d]67<screen><userinput remap="make">make -C src</userinput></screen>
[73aedd1d]68
[ddd5542]69 <para>This package does not come with a test suite.</para>
[0be3d41]70
[ddd5542]71 <para>Install the package:</para>
[73aedd1d]72
[0445a3d]73<screen><userinput remap="install">make -C src install</userinput></screen>
[73aedd1d]74
[ddd5542]75 </sect2>
[5888299]76
[ddd5542]77 <sect2 id="contents-sysvinit" role="content">
78 <title>Contents of Sysvinit</title>
79
80 <segmentedlist>
81 <segtitle>Installed programs</segtitle>
82
83 <seglistitem>
[2ca8941]84 <seg>bootlogd, fstab-decode, halt, init, killall5, last,
[3119ddc]85 lastb (link to last), mesg, pidof (link to killall5),
86 poweroff (link to halt), reboot (link to halt), runlevel, shutdown,
[4322222]87 sulogin, and telinit (link to init)</seg>
[ddd5542]88 </seglistitem>
89 </segmentedlist>
90
91 <variablelist>
92 <bridgehead renderas="sect3">Short Descriptions</bridgehead>
93 <?dbfo list-presentation="list"?>
94 <?dbhtml list-presentation="table"?>
95
[8bc46a5]96 <varlistentry id="bootlogd">
97 <term><command>bootlogd</command></term>
98 <listitem>
99 <para>Logs boot messages to a log file</para>
100 <indexterm zone="ch-system-sysvinit bootlogd">
101 <primary sortas="b-bootlogd">bootlogd</primary>
102 </indexterm>
103 </listitem>
104 </varlistentry>
105
[b188c43]106 <varlistentry id="fstab-decode">
107 <term><command>fstab-decode</command></term>
108 <listitem>
109 <para>Run a command with fstab-encoded arguments</para>
110 <indexterm zone="ch-system-sysvinit fstab-decode">
111 <primary sortas="b-fstab-decode">fstab-decode</primary>
112 </indexterm>
113 </listitem>
114 </varlistentry>
115
[ddd5542]116 <varlistentry id="halt">
117 <term><command>halt</command></term>
118 <listitem>
119 <para>Normally invokes <command>shutdown</command> with the
120 <parameter>-h</parameter> option, except when already in run-level 0,
121 then it tells the kernel to halt the system; it notes in the
122 file <filename>/var/log/wtmp</filename> that the system is being
123 brought down</para>
124 <indexterm zone="ch-system-sysvinit halt">
125 <primary sortas="b-halt">halt</primary>
126 </indexterm>
127 </listitem>
128 </varlistentry>
129
130 <varlistentry id="init">
131 <term><command>init</command></term>
132 <listitem>
133 <para>The first process to be started when the kernel has initialized
134 the hardware which takes over the boot process and starts all the
135 proceses it is instructed to</para>
136 <indexterm zone="ch-system-sysvinit init">
137 <primary sortas="b-init">init</primary>
138 </indexterm>
139 </listitem>
140 </varlistentry>
141
142 <varlistentry id="killall5">
143 <term><command>killall5</command></term>
144 <listitem>
145 <para>Sends a signal to all processes, except the processes in its own
146 session so it will not kill the shell running the script that called
147 it</para>
148 <indexterm zone="ch-system-sysvinit killall5">
149 <primary sortas="b-killall5">killall5</primary>
150 </indexterm>
151 </listitem>
152 </varlistentry>
153
154 <varlistentry id="last">
155 <term><command>last</command></term>
156 <listitem>
157 <para>Shows which users last logged in (and out), searching back
158 through the <filename>/var/log/wtmp</filename> file; it also shows
159 system boots, shutdowns, and run-level changes</para>
160 <indexterm zone="ch-system-sysvinit last">
161 <primary sortas="b-last">last</primary>
162 </indexterm>
163 </listitem>
164 </varlistentry>
165
166 <varlistentry id="lastb">
167 <term><command>lastb</command></term>
168 <listitem>
169 <para>Shows the failed login attempts, as logged in
170 <filename>/var/log/btmp</filename></para>
171 <indexterm zone="ch-system-sysvinit lastb">
172 <primary sortas="b-lastb">lastb</primary>
173 </indexterm>
174 </listitem>
175 </varlistentry>
176
177 <varlistentry id="mesg">
178 <term><command>mesg</command></term>
179 <listitem>
180 <para>Controls whether other users can send messages to the current
181 user's terminal</para>
182 <indexterm zone="ch-system-sysvinit mesg">
183 <primary sortas="b-mesg">mesg</primary>
184 </indexterm>
185 </listitem>
186 </varlistentry>
187
188 <varlistentry id="pidof">
189 <term><command>pidof</command></term>
190 <listitem>
191 <para>Reports the PIDs of the given programs</para>
192 <indexterm zone="ch-system-sysvinit pidof">
193 <primary sortas="b-pidof">pidof</primary>
194 </indexterm>
195 </listitem>
196 </varlistentry>
197
198 <varlistentry id="poweroff">
199 <term><command>poweroff</command></term>
200 <listitem>
201 <para>Tells the kernel to halt the system and switch off the computer
202 (see <command>halt</command>)</para>
203 <indexterm zone="ch-system-sysvinit poweroff">
204 <primary sortas="b-poweroff">poweroff</primary>
205 </indexterm>
206 </listitem>
207 </varlistentry>
208
209 <varlistentry id="reboot">
210 <term><command>reboot</command></term>
211 <listitem>
212 <para>Tells the kernel to reboot the system (see
213 <command>halt</command>)</para>
214 <indexterm zone="ch-system-sysvinit reboot">
215 <primary sortas="b-reboot">reboot</primary>
216 </indexterm>
217 </listitem>
218 </varlistentry>
219
220 <varlistentry id="runlevel">
221 <term><command>runlevel</command></term>
222 <listitem>
223 <para>Reports the previous and the current run-level, as noted in the
224 last run-level record in <filename>/var/run/utmp</filename></para>
225 <indexterm zone="ch-system-sysvinit runlevel">
226 <primary sortas="b-runlevel">runlevel</primary>
227 </indexterm>
228 </listitem>
229 </varlistentry>
230
231 <varlistentry id="shutdown">
232 <term><command>shutdown</command></term>
233 <listitem>
234 <para>Brings the system down in a secure way, signaling all processes
235 and notifying all logged-in users</para>
236 <indexterm zone="ch-system-sysvinit shutdown">
237 <primary sortas="b-shutdown">shutdown</primary>
238 </indexterm>
239 </listitem>
240 </varlistentry>
241
242 <varlistentry id="sulogin">
243 <term><command>sulogin</command></term>
244 <listitem>
245 <para>Allows <systemitem class="username">root</systemitem> to log in;
246 it is normally invoked by <command>init</command> when the system goes
247 into single user mode</para>
248 <indexterm zone="ch-system-sysvinit sulogin">
249 <primary sortas="b-sulogin">sulogin</primary>
250 </indexterm>
251 </listitem>
252 </varlistentry>
253
254 <varlistentry id="telinit">
255 <term><command>telinit</command></term>
256 <listitem>
257 <para>Tells <command>init</command> which run-level to change to</para>
258 <indexterm zone="ch-system-sysvinit telinit">
259 <primary sortas="b-telinit">telinit</primary>
260 </indexterm>
261 </listitem>
262 </varlistentry>
263
264 </variablelist>
265
266 </sect2>
[81fd230]267
[ddd5542]268</sect1>
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