source: final-system/common/sysvinit.xml@ 75e10d2

Last change on this file since 75e10d2 was 0636f6c, checked in by Jim Gifford <clfs@…>, 19 years ago

r981@server (orig r979): jim | 2005-12-30 10:11:32 -0800

r1226@server: cstaub | 2005-12-30 08:35:37 -0800
Updated package deps, removed explanation of cross-compiling from final-system binutils, and removed note about GRUB's testsuite failure


  • Property mode set to 100644
File size: 10.6 KB
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1<?xml version="1.0" encoding="ISO-8859-1"?>
2<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN"
3 "http://www.oasis-open.org/docbook/xml/4.4/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 <segmentedlist>
23 <segtitle>&dependencies;</segtitle>
24
25 <seglistitem>
26 <seg>Binutils, Coreutils, GCC, Glibc, Make, and Sed</seg>
27 </seglistitem>
28 </segmentedlist>
29
30 </sect2>
31
32 <sect2 role="installation">
33 <title>Installation of Sysvinit</title>
34
35 <para os="a">When run-levels are changed (for example, when halting the
36 system), <command>init</command> sends termination signals to those
37 processes that <command>init</command> itself started and that should
38 not be running in the new run-level. While doing this,
39 <command>init</command> outputs messages like <quote>Sending processes
40 the TERM signal</quote> which seem to imply that it is sending these
41 signals to all currently running processes. To avoid this
42 misinterpretation, modify the source so that these messages read like
43 <quote>Sending processes started by init the TERM signal</quote>
44 instead:</para>
45
46<screen os="b"><userinput>sed -i 's@Sending processes@&amp; started by init@g' \
47 src/init.c</userinput></screen>
48
49 <para os="c">Compile the package:</para>
50
51<screen os="d"><userinput>make -C src clobber
52make -C src</userinput></screen>
53
54 <para os="e">Install the package:</para>
55
56<screen os="f"><userinput>make -C src install</userinput></screen>
57
58 </sect2>
59
60 <sect2 id="conf-sysvinit" role="configuration">
61 <title>Configuring Sysvinit</title>
62
63 <indexterm zone="conf-sysvinit">
64 <primary sortas="a-Sysvinit">Sysvinit</primary>
65 <secondary>configuring</secondary></indexterm>
66
67 <indexterm zone="conf-sysvinit">
68 <primary sortas="e-/etc/inittab">/etc/inittab</primary>
69 </indexterm>
70
71 <para>Create a new file <filename>/etc/inittab</filename> by running the
72 following:</para>
73
74<screen><userinput>cat &gt; /etc/inittab &lt;&lt; "EOF"
75<literal># Begin /etc/inittab
76
77id:3:initdefault:
78
79si::sysinit:/etc/rc.d/init.d/rc sysinit
80
81l0:0:wait:/etc/rc.d/init.d/rc 0
82l1:S1:wait:/etc/rc.d/init.d/rc 1
83l2:2:wait:/etc/rc.d/init.d/rc 2
84l3:3:wait:/etc/rc.d/init.d/rc 3
85l4:4:wait:/etc/rc.d/init.d/rc 4
86l5:5:wait:/etc/rc.d/init.d/rc 5
87l6:6:wait:/etc/rc.d/init.d/rc 6
88
89ca:12345:ctrlaltdel:/sbin/shutdown -t1 -a -r now
90
91su:S016:once:/sbin/sulogin
92
931:2345:respawn:/sbin/agetty -I '\033(K' tty1 9600
942:2345:respawn:/sbin/agetty -I '\033(K' tty2 9600
953:2345:respawn:/sbin/agetty -I '\033(K' tty3 9600
964:2345:respawn:/sbin/agetty -I '\033(K' tty4 9600
975:2345:respawn:/sbin/agetty -I '\033(K' tty5 9600
986:2345:respawn:/sbin/agetty -I '\033(K' tty6 9600
99
100# End /etc/inittab</literal>
101EOF</userinput></screen>
102
103 <para>The <parameter>-I '\033(K'</parameter> option tells
104 <command>agetty</command> to send this escape sequence to the terminal
105 before doing anything else. This escape sequence switches the console
106 character set to a user-defined one, which can be modified by running
107 the <command>setfont</command> program. The <command>console</command>
108 initscript from the LFS-Bootscripts package calls the
109 <command>setfont</command> program during system startup. Sending this
110 escape sequence is necessary for people who use non-ISO 8859-1 screen
111 fonts, but it does not affect native English speakers.</para>
112
113 </sect2>
114
115 <sect2 id="contents-sysvinit" role="content">
116 <title>Contents of Sysvinit</title>
117
118 <segmentedlist>
119 <segtitle>Installed programs</segtitle>
120
121 <seglistitem>
122 <seg>halt, init, killall5, last, lastb (link to last), mesg, pidof
123 (link to killall5), poweroff (link to halt), reboot (link to halt),
124 runlevel, shutdown, sulogin, telinit (link to init), utmpdump,
125 and wall</seg>
126 </seglistitem>
127 </segmentedlist>
128
129 <variablelist>
130 <bridgehead renderas="sect3">Short Descriptions</bridgehead>
131 <?dbfo list-presentation="list"?>
132 <?dbhtml list-presentation="table"?>
133
134 <varlistentry id="halt">
135 <term><command>halt</command></term>
136 <listitem>
137 <para>Normally invokes <command>shutdown</command> with the
138 <parameter>-h</parameter> option, except when already in run-level 0,
139 then it tells the kernel to halt the system; it notes in the
140 file <filename>/var/log/wtmp</filename> that the system is being
141 brought down</para>
142 <indexterm zone="ch-system-sysvinit halt">
143 <primary sortas="b-halt">halt</primary>
144 </indexterm>
145 </listitem>
146 </varlistentry>
147
148 <varlistentry id="init">
149 <term><command>init</command></term>
150 <listitem>
151 <para>The first process to be started when the kernel has initialized
152 the hardware which takes over the boot process and starts all the
153 proceses it is instructed to</para>
154 <indexterm zone="ch-system-sysvinit init">
155 <primary sortas="b-init">init</primary>
156 </indexterm>
157 </listitem>
158 </varlistentry>
159
160 <varlistentry id="killall5">
161 <term><command>killall5</command></term>
162 <listitem>
163 <para>Sends a signal to all processes, except the processes in its own
164 session so it will not kill the shell running the script that called
165 it</para>
166 <indexterm zone="ch-system-sysvinit killall5">
167 <primary sortas="b-killall5">killall5</primary>
168 </indexterm>
169 </listitem>
170 </varlistentry>
171
172 <varlistentry id="last">
173 <term><command>last</command></term>
174 <listitem>
175 <para>Shows which users last logged in (and out), searching back
176 through the <filename>/var/log/wtmp</filename> file; it also shows
177 system boots, shutdowns, and run-level changes</para>
178 <indexterm zone="ch-system-sysvinit last">
179 <primary sortas="b-last">last</primary>
180 </indexterm>
181 </listitem>
182 </varlistentry>
183
184 <varlistentry id="lastb">
185 <term><command>lastb</command></term>
186 <listitem>
187 <para>Shows the failed login attempts, as logged in
188 <filename>/var/log/btmp</filename></para>
189 <indexterm zone="ch-system-sysvinit lastb">
190 <primary sortas="b-lastb">lastb</primary>
191 </indexterm>
192 </listitem>
193 </varlistentry>
194
195 <varlistentry id="mesg">
196 <term><command>mesg</command></term>
197 <listitem>
198 <para>Controls whether other users can send messages to the current
199 user's terminal</para>
200 <indexterm zone="ch-system-sysvinit mesg">
201 <primary sortas="b-mesg">mesg</primary>
202 </indexterm>
203 </listitem>
204 </varlistentry>
205
206 <varlistentry id="pidof">
207 <term><command>pidof</command></term>
208 <listitem>
209 <para>Reports the PIDs of the given programs</para>
210 <indexterm zone="ch-system-sysvinit pidof">
211 <primary sortas="b-pidof">pidof</primary>
212 </indexterm>
213 </listitem>
214 </varlistentry>
215
216 <varlistentry id="poweroff">
217 <term><command>poweroff</command></term>
218 <listitem>
219 <para>Tells the kernel to halt the system and switch off the computer
220 (see <command>halt</command>)</para>
221 <indexterm zone="ch-system-sysvinit poweroff">
222 <primary sortas="b-poweroff">poweroff</primary>
223 </indexterm>
224 </listitem>
225 </varlistentry>
226
227 <varlistentry id="reboot">
228 <term><command>reboot</command></term>
229 <listitem>
230 <para>Tells the kernel to reboot the system (see
231 <command>halt</command>)</para>
232 <indexterm zone="ch-system-sysvinit reboot">
233 <primary sortas="b-reboot">reboot</primary>
234 </indexterm>
235 </listitem>
236 </varlistentry>
237
238 <varlistentry id="runlevel">
239 <term><command>runlevel</command></term>
240 <listitem>
241 <para>Reports the previous and the current run-level, as noted in
242 the last run-level record in <filename>/var/run/utmp</filename></para>
243 <indexterm zone="ch-system-sysvinit runlevel">
244 <primary sortas="b-runlevel">runlevel</primary>
245 </indexterm>
246 </listitem>
247 </varlistentry>
248
249 <varlistentry id="shutdown">
250 <term><command>shutdown</command></term>
251 <listitem>
252 <para>Brings the system down in a secure way, signaling all processes
253 and notifying all logged-in users</para>
254 <indexterm zone="ch-system-sysvinit shutdown">
255 <primary sortas="b-shutdown">shutdown</primary>
256 </indexterm>
257 </listitem>
258 </varlistentry>
259
260 <varlistentry id="sulogin">
261 <term><command>sulogin</command></term>
262 <listitem>
263 <para>Allows <emphasis>root</emphasis> to log in; it is normally
264 invoked by <command>init</command> when the system goes into single
265 user mode</para>
266 <indexterm zone="ch-system-sysvinit sulogin">
267 <primary sortas="b-sulogin">sulogin</primary>
268 </indexterm>
269 </listitem>
270 </varlistentry>
271
272 <varlistentry id="telinit">
273 <term><command>telinit</command></term>
274 <listitem>
275 <para>Tells <command>init</command> which run-level to change to</para>
276 <indexterm zone="ch-system-sysvinit telinit">
277 <primary sortas="b-telinit">telinit</primary>
278 </indexterm>
279 </listitem>
280 </varlistentry>
281
282 <varlistentry id="utmpdump">
283 <term><command>utmpdump</command></term>
284 <listitem>
285 <para>Displays the content of the given login file in a more
286 user-friendly format</para>
287 <indexterm zone="ch-system-sysvinit utmpdump">
288 <primary sortas="b-utmpdump">utmpdump</primary>
289 </indexterm>
290 </listitem>
291 </varlistentry>
292
293 <varlistentry id="wall">
294 <term><command>wall</command></term>
295 <listitem>
296 <para>Writes a message to all logged-in users</para>
297 <indexterm zone="ch-system-sysvinit wall">
298 <primary sortas="b-wall">wall</primary>
299 </indexterm>
300 </listitem>
301 </varlistentry>
302
303 </variablelist>
304
305 </sect2>
306
307</sect1>
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