source: BOOK/final-system/common/sysvinit.xml@ 7ddb05f

sysvinit
Last change on this file since 7ddb05f was d31e344, checked in by Chris Staub <chris@…>, 10 years ago

Changed /var/run references to /run

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[82fc053]1<?xml version="1.0" encoding="ISO-8859-1"?>
2<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
3 "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
4 <!ENTITY % general-entities SYSTEM "../../general.ent">
5 %general-entities;
6]>
7<sect1 id="ch-system-sysvinit" role="wrap">
8 <?dbhtml filename="sysvinit.html"?>
9
10 <title>Sysvinit-&sysvinit-version;</title>
11
12 <indexterm zone="ch-system-sysvinit">
13 <primary sortas="a-Sysvinit">Sysvinit</primary>
14 </indexterm>
15
16 <sect2 role="package">
17 <title/>
18
19 <para>The Sysvinit package contains programs for controlling the startup,
20 running, and shutdown of the system.</para>
21
22 </sect2>
23
24 <sect2 role="installation">
25 <title>Installation of Sysvinit</title>
26
[a4fd97e]27 <para os ="a">Apply a <command>sed</command> to disable several programs
28 from being built and installed as better versions are provided by
29 other packages:</para>
[82fc053]30
[a4fd97e]31<screen os="b"><userinput>sed -i -e 's/\ sulogin[^ ]*//' -e 's/pidof\.8//' -e '/ln .*pidof/d' \
[82fc053]32 -e '/utmpdump/d' -e '/mountpoint/d' -e '/mesg/d' src/Makefile</userinput></screen>
33
[87da537]34 <para os ="c">Compile the package:</para>
[82fc053]35
36<screen os="d"><userinput>make -C src clobber
37make -C src</userinput></screen>
38
39 <para os="e">Install the package:</para>
40
41<screen os="f"><userinput>make -C src install</userinput></screen>
42
43 </sect2>
44
45 <sect2 id="conf-sysvinit" role="configuration">
46 <title>Configuring Sysvinit</title>
47
48 <indexterm zone="conf-sysvinit">
49 <primary sortas="a-Sysvinit">Sysvinit</primary>
50 <secondary>configuring</secondary></indexterm>
51
52 <indexterm zone="conf-sysvinit">
53 <primary sortas="e-/etc/inittab">/etc/inittab</primary>
54 </indexterm>
55
56 <para>Create a new file <filename>/etc/inittab</filename> by running the
57 following:</para>
58
59<screen><userinput>cat &gt; /etc/inittab &lt;&lt; "EOF"
60<literal># Begin /etc/inittab
61
62id:3:initdefault:
63
64si::sysinit:/etc/rc.d/init.d/rc sysinit
65
66l0:0:wait:/etc/rc.d/init.d/rc 0
67l1:S1:wait:/etc/rc.d/init.d/rc 1
68l2:2:wait:/etc/rc.d/init.d/rc 2
69l3:3:wait:/etc/rc.d/init.d/rc 3
70l4:4:wait:/etc/rc.d/init.d/rc 4
71l5:5:wait:/etc/rc.d/init.d/rc 5
72l6:6:wait:/etc/rc.d/init.d/rc 6
73
74ca:12345:ctrlaltdel:/sbin/shutdown -t1 -a -r now
75
76su:S016:once:/sbin/sulogin
77</literal>
78EOF</userinput></screen>
79
80 <para>The following command adds the standard virtual terminals to
81 <filename>/etc/inittab</filename>. If your system only has a serial
82 console skip the following command:</para>
83
84<screen><userinput>cat &gt;&gt; /etc/inittab &lt;&lt; "EOF"
85<literal>1:2345:respawn:/sbin/agetty --noclear -I '\033(K' tty1 9600
862:2345:respawn:/sbin/agetty --noclear -I '\033(K' tty2 9600
873:2345:respawn:/sbin/agetty --noclear -I '\033(K' tty3 9600
884:2345:respawn:/sbin/agetty --noclear -I '\033(K' tty4 9600
895:2345:respawn:/sbin/agetty --noclear -I '\033(K' tty5 9600
906:2345:respawn:/sbin/agetty --noclear -I '\033(K' tty6 9600
91</literal>
92EOF</userinput></screen>
93
94 <para>If your system has a serial console run the following command to add
95 the entry to <filename>/etc/inittab</filename>:</para>
96
97<screen><userinput>cat &gt;&gt; /etc/inittab &lt;&lt; "EOF"
98<literal>c0:12345:respawn:/sbin/agetty --noclear 115200 ttyS0 vt100
99</literal>
100EOF</userinput></screen>
101
102 <para>Finally, add the end line to <filename>/etc/inittab</filename>:</para>
103
104<screen><userinput>cat &gt;&gt; /etc/inittab &lt;&lt; "EOF"
105<literal># End /etc/inittab</literal>
106EOF</userinput></screen>
107
108 <para>The <parameter>-I '\033(K'</parameter> option tells
109 <command>agetty</command> to send this escape sequence to the terminal
110 before doing anything else. This escape sequence switches the console
111 character set to a user-defined one, which can be modified by running
[9b1549f]112 the <command>setfont</command> program. The <command>i18n</command>
[82fc053]113 initscript from the CLFS-Bootscripts package calls the
114 <command>setfont</command> program during system startup. Sending this
115 escape sequence is necessary for people who use non-ISO 8859-1 screen
116 fonts, but it does not affect native English speakers.</para>
117
118 </sect2>
119
120 <sect2 id="contents-sysvinit" role="content">
121 <title>Contents of Sysvinit</title>
122
123 <segmentedlist>
124 <segtitle>Installed programs</segtitle>
125
126 <seglistitem>
[a4fd97e]127 <seg>bootlogd, fstab-decode, halt, init, killall5, poweroff
128 (link to halt), reboot (link to halt), runlevel, shutdown, telinit
129 (link to init)</seg>
[82fc053]130 </seglistitem>
131 </segmentedlist>
132
133 <variablelist>
134 <bridgehead renderas="sect3">Short Descriptions</bridgehead>
135 <?dbfo list-presentation="list"?>
136 <?dbhtml list-presentation="table"?>
137
138 <varlistentry id="bootlogd">
139 <term><command>bootlogd</command></term>
140 <listitem>
141 <para>Logs boot messages to a log file</para>
142 <indexterm zone="ch-system-sysvinit bootlogd">
143 <primary sortas="b-bootlogd">bootlogd</primary>
144 </indexterm>
145 </listitem>
146 </varlistentry>
147
148 <varlistentry id="fstab-decode">
149 <term><command>fstab-decode</command></term>
150 <listitem>
151 <para>Runs a command with fstab-encoded arguments</para>
152 <indexterm zone="ch-system-sysvinit fstab-decode">
153 <primary sortas="b-fstab-decode">fstab-decode</primary>
154 </indexterm>
155 </listitem>
156 </varlistentry>
157
158 <varlistentry id="halt">
159 <term><command>halt</command></term>
160 <listitem>
161 <para>Normally invokes <command>shutdown</command> with the
162 <parameter>-h</parameter> option, except when already in run-level 0,
163 then it tells the kernel to halt the system; it notes in the
164 file <filename>/var/log/wtmp</filename> that the system is being
165 brought down</para>
166 <indexterm zone="ch-system-sysvinit halt">
167 <primary sortas="b-halt">halt</primary>
168 </indexterm>
169 </listitem>
170 </varlistentry>
171
172 <varlistentry id="init">
173 <term><command>init</command></term>
174 <listitem>
175 <para>The first process to be started when the kernel has initialized
176 the hardware which takes over the boot process and starts all the
177 proceses it is instructed to</para>
178 <indexterm zone="ch-system-sysvinit init">
179 <primary sortas="b-init">init</primary>
180 </indexterm>
181 </listitem>
182 </varlistentry>
183
184 <varlistentry id="killall5">
185 <term><command>killall5</command></term>
186 <listitem>
187 <para>Sends a signal to all processes, except the processes in its own
188 session so it will not kill the shell running the script that called
189 it</para>
190 <indexterm zone="ch-system-sysvinit killall5">
191 <primary sortas="b-killall5">killall5</primary>
192 </indexterm>
193 </listitem>
194 </varlistentry>
195
196 <varlistentry id="poweroff">
197 <term><command>poweroff</command></term>
198 <listitem>
199 <para>Tells the kernel to halt the system and switch off the computer
200 (see <command>halt</command>)</para>
201 <indexterm zone="ch-system-sysvinit poweroff">
202 <primary sortas="b-poweroff">poweroff</primary>
203 </indexterm>
204 </listitem>
205 </varlistentry>
206
207 <varlistentry id="reboot">
208 <term><command>reboot</command></term>
209 <listitem>
210 <para>Tells the kernel to reboot the system (see
211 <command>halt</command>)</para>
212 <indexterm zone="ch-system-sysvinit reboot">
213 <primary sortas="b-reboot">reboot</primary>
214 </indexterm>
215 </listitem>
216 </varlistentry>
217
218 <varlistentry id="runlevel">
219 <term><command>runlevel</command></term>
220 <listitem>
221 <para>Reports the previous and the current run-level, as noted in
[d31e344]222 the last run-level record in <filename>/run/utmp</filename></para>
[82fc053]223 <indexterm zone="ch-system-sysvinit runlevel">
224 <primary sortas="b-runlevel">runlevel</primary>
225 </indexterm>
226 </listitem>
227 </varlistentry>
228
229 <varlistentry id="shutdown">
230 <term><command>shutdown</command></term>
231 <listitem>
232 <para>Brings the system down in a secure way, signaling all processes
233 and notifying all logged-in users</para>
234 <indexterm zone="ch-system-sysvinit shutdown">
235 <primary sortas="b-shutdown">shutdown</primary>
236 </indexterm>
237 </listitem>
238 </varlistentry>
239
240 <varlistentry id="telinit">
241 <term><command>telinit</command></term>
242 <listitem>
243 <para>Tells <command>init</command> which run-level to change to</para>
244 <indexterm zone="ch-system-sysvinit telinit">
245 <primary sortas="b-telinit">telinit</primary>
246 </indexterm>
247 </listitem>
248 </varlistentry>
249
250 </variablelist>
251
252 </sect2>
253
254</sect1>
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