source: BOOK/final-system/common/sysvinit.xml @ 2aae4a3

clfs-2.1clfs-3.0.0-systemdclfs-3.0.0-sysvinitsystemdsysvinit
Last change on this file since 2aae4a3 was 2aae4a3, checked in by William Harrington <kb0iic@…>, 9 years ago

Add --noclear to inittab.

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File size: 10.3 KB
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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
27<para os ="a">Apply a sed which disables sulogin, mountpoint, wall, and
28utmpdump from being built and installed as they are provided by Util-linux:</para>
29
30<screen os="b"><userinput>sed -i -e 's/\ sulogin[^ ]*//' \
31    -e '/utmpdump/d' -e '/mountpoint/d' src/Makefile</userinput></screen>
32
33<para os ="c">Compile the package:</para>
34
35<screen os="d"><userinput>make -C src clobber
36make -C src</userinput></screen>
37
38    <para os="e">Install the package:</para>
39
40<screen os="f"><userinput>make -C src install</userinput></screen>
41
42  </sect2>
43
44  <sect2 id="conf-sysvinit" role="configuration">
45    <title>Configuring Sysvinit</title>
46
47    <indexterm zone="conf-sysvinit">
48      <primary sortas="a-Sysvinit">Sysvinit</primary>
49    <secondary>configuring</secondary></indexterm>
50
51    <indexterm zone="conf-sysvinit">
52      <primary sortas="e-/etc/inittab">/etc/inittab</primary>
53    </indexterm>
54
55    <para>Create a new file <filename>/etc/inittab</filename> by running the
56    following:</para>
57
58<screen><userinput>cat &gt; /etc/inittab &lt;&lt; "EOF"
59<literal># Begin /etc/inittab
60
61id:3:initdefault:
62
63si::sysinit:/etc/rc.d/init.d/rc sysinit
64
65l0:0:wait:/etc/rc.d/init.d/rc 0
66l1:S1:wait:/etc/rc.d/init.d/rc 1
67l2:2:wait:/etc/rc.d/init.d/rc 2
68l3:3:wait:/etc/rc.d/init.d/rc 3
69l4:4:wait:/etc/rc.d/init.d/rc 4
70l5:5:wait:/etc/rc.d/init.d/rc 5
71l6:6:wait:/etc/rc.d/init.d/rc 6
72
73ca:12345:ctrlaltdel:/sbin/shutdown -t1 -a -r now
74
75su:S016:once:/sbin/sulogin
76</literal>
77EOF</userinput></screen>
78
79    <para>The following command adds the standard virtual terminals to
80    <filename>/etc/inittab</filename>. If your system only has a serial
81    console skip the following command:</para>
82
83<screen><userinput>cat &gt;&gt; /etc/inittab &lt;&lt; "EOF"
84<literal>1:2345:respawn:/sbin/agetty -I '\033(K' tty1 9600
852:2345:respawn:/sbin/agetty --noclear -I '\033(K' tty2 9600
863:2345:respawn:/sbin/agetty --noclear -I '\033(K' tty3 9600
874:2345:respawn:/sbin/agetty --noclear -I '\033(K' tty4 9600
885:2345:respawn:/sbin/agetty --noclear -I '\033(K' tty5 9600
896:2345:respawn:/sbin/agetty --noclear -I '\033(K' tty6 9600
90</literal>
91EOF</userinput></screen>
92
93    <para>If your system has a serial console run the following command to add
94    the entry to <filename>/etc/inittab</filename>:</para>
95
96<screen><userinput>cat &gt;&gt; /etc/inittab &lt;&lt; "EOF"
97<literal>c0:12345:respawn:/sbin/agetty --noclear 115200 ttyS0 vt100
98</literal>
99EOF</userinput></screen>
100
101   <para>Finally, add the end line to <filename>/etc/inittab</filename>:</para>
102
103<screen><userinput>cat &gt;&gt; /etc/inittab &lt;&lt; "EOF"
104<literal># End /etc/inittab</literal>
105EOF</userinput></screen>
106
107    <para>The <parameter>-I '\033(K'</parameter> option tells
108    <command>agetty</command> to send this escape sequence to the terminal
109    before doing anything else. This escape sequence switches the console
110    character set to a user-defined one, which can be modified by running
111    the <command>setfont</command> program. The <command>console</command>
112    initscript from the CLFS-Bootscripts package calls the
113    <command>setfont</command> program during system startup. Sending this
114    escape sequence is necessary for people who use non-ISO 8859-1 screen
115    fonts, but it does not affect native English speakers.</para>
116
117  </sect2>
118
119  <sect2 id="contents-sysvinit" role="content">
120    <title>Contents of Sysvinit</title>
121
122    <segmentedlist>
123      <segtitle>Installed programs</segtitle>
124
125      <seglistitem>
126        <seg>bootlogd, fstab-decode, halt, init, killall5, last, lastb (link
127        to last), mesg,
128        pidof (link to killall5), poweroff (link to halt),
129        reboot (link to halt), runlevel, shutdown, and telinit (link to init)</seg>
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="last">
197        <term><command>last</command></term>
198        <listitem>
199          <para>Shows which users last logged in (and out), searching back
200          through the <filename>/var/log/wtmp</filename> file; it also shows
201          system boots, shutdowns, and run-level changes</para>
202          <indexterm zone="ch-system-sysvinit last">
203            <primary sortas="b-last">last</primary>
204          </indexterm>
205        </listitem>
206      </varlistentry>
207
208      <varlistentry id="lastb">
209        <term><command>lastb</command></term>
210        <listitem>
211          <para>Shows the failed login attempts, as logged in
212          <filename>/var/log/btmp</filename></para>
213          <indexterm zone="ch-system-sysvinit lastb">
214            <primary sortas="b-lastb">lastb</primary>
215          </indexterm>
216        </listitem>
217      </varlistentry>
218
219      <varlistentry id="mesg">
220        <term><command>mesg</command></term>
221        <listitem>
222          <para>Controls whether other users can send messages to the current
223          user's terminal</para>
224          <indexterm zone="ch-system-sysvinit mesg">
225            <primary sortas="b-mesg">mesg</primary>
226          </indexterm>
227        </listitem>
228      </varlistentry>
229
230      <varlistentry id="pidof">
231        <term><command>pidof</command></term>
232        <listitem>
233          <para>Reports the PIDs of the given programs</para>
234          <indexterm zone="ch-system-sysvinit pidof">
235            <primary sortas="b-pidof">pidof</primary>
236          </indexterm>
237        </listitem>
238      </varlistentry>
239
240      <varlistentry id="poweroff">
241        <term><command>poweroff</command></term>
242        <listitem>
243          <para>Tells the kernel to halt the system and switch off the computer
244          (see <command>halt</command>)</para>
245          <indexterm zone="ch-system-sysvinit poweroff">
246            <primary sortas="b-poweroff">poweroff</primary>
247          </indexterm>
248        </listitem>
249      </varlistentry>
250
251      <varlistentry id="reboot">
252        <term><command>reboot</command></term>
253        <listitem>
254          <para>Tells the kernel to reboot the system (see
255          <command>halt</command>)</para>
256          <indexterm zone="ch-system-sysvinit reboot">
257            <primary sortas="b-reboot">reboot</primary>
258          </indexterm>
259        </listitem>
260      </varlistentry>
261
262      <varlistentry id="runlevel">
263        <term><command>runlevel</command></term>
264        <listitem>
265          <para>Reports the previous and the current run-level, as noted in
266          the last run-level record in <filename>/var/run/utmp</filename></para>
267          <indexterm zone="ch-system-sysvinit runlevel">
268            <primary sortas="b-runlevel">runlevel</primary>
269          </indexterm>
270        </listitem>
271      </varlistentry>
272
273      <varlistentry id="shutdown">
274        <term><command>shutdown</command></term>
275        <listitem>
276          <para>Brings the system down in a secure way, signaling all processes
277          and notifying all logged-in users</para>
278          <indexterm zone="ch-system-sysvinit shutdown">
279            <primary sortas="b-shutdown">shutdown</primary>
280          </indexterm>
281        </listitem>
282      </varlistentry>
283
284      <varlistentry id="telinit">
285        <term><command>telinit</command></term>
286        <listitem>
287          <para>Tells <command>init</command> which run-level to change to</para>
288          <indexterm zone="ch-system-sysvinit telinit">
289            <primary sortas="b-telinit">telinit</primary>
290          </indexterm>
291        </listitem>
292      </varlistentry>
293
294    </variablelist>
295
296  </sect2>
297
298</sect1>
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