source: chapter08/bzip2.xml@ 0389538

11.0 11.0-rc1 11.0-rc2 11.0-rc3 11.1 11.1-rc1 arm ml-11.0 multilib s6-init trunk xry111/clfs-ng xry111/glibc-2.34 xry111/lfs-next xry111/tester-nohack
Last change on this file since 0389538 was 0389538, checked in by Xi Ruoyao <xry111@…>, 15 months ago

bzip2: replace copies of bzip2 executable with symlinks

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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
8<sect1 id="ch-system-bzip2" role="wrap">
9 <?dbhtml filename="bzip2.html"?>
10
11 <sect1info condition="script">
12 <productname>bzip2</productname>
13 <productnumber>&bzip2-version;</productnumber>
14 <address>&bzip2-url;</address>
15 </sect1info>
16
17 <title>Bzip2-&bzip2-version;</title>
18
19 <indexterm zone="ch-system-bzip2">
20 <primary sortas="a-Bzip2">Bzip2</primary>
21 </indexterm>
22
23 <sect2 role="package">
24 <title/>
25
26 <para>The Bzip2 package contains programs for compressing and decompressing
27 files. Compressing text files with <command>bzip2</command> yields a much
28 better compression percentage than with the traditional
29 <command>gzip</command>.</para>
30
31 <segmentedlist>
32 <segtitle>&buildtime;</segtitle>
33 <segtitle>&diskspace;</segtitle>
34
35 <seglistitem>
36 <seg>&bzip2-fin-sbu;</seg>
37 <seg>&bzip2-fin-du;</seg>
38 </seglistitem>
39 </segmentedlist>
40
41 </sect2>
42
43 <sect2 role="installation">
44 <title>Installation of Bzip2</title>
45
46 <para>Apply a patch that will install the documentation for this package:</para>
47
48<screen><userinput remap="pre">patch -Np1 -i ../&bzip2-docs-patch;</userinput></screen>
49
50 <para>The following command ensures installation of symbolic links are relative:</para>
51
52<screen><userinput remap="pre">sed -i 's@\(ln -s -f \)$(PREFIX)/bin/@\1@' Makefile</userinput></screen>
53
54 <para>Ensure the man pages are installed into the correct location:</para>
55
56<screen><userinput remap="pre">sed -i "s@(PREFIX)/man@(PREFIX)/share/man@g" Makefile</userinput></screen>
57
58 <para>Prepare Bzip2 for compilation with:</para>
59
60<screen><userinput remap="make">make -f Makefile-libbz2_so
61make clean</userinput></screen>
62
63 <variablelist>
64 <title>The meaning of the make parameter:</title>
65
66 <varlistentry>
67 <term><parameter>-f Makefile-libbz2_so</parameter></term>
68 <listitem>
69 <para>This will cause Bzip2 to be built using a different
70 <filename>Makefile</filename> file, in this case the
71 <filename>Makefile-libbz2_so</filename> file, which creates a dynamic
72 <filename class="libraryfile">libbz2.so</filename> library and links
73 the Bzip2 utilities against it.</para>
74 </listitem>
75 </varlistentry>
76
77 </variablelist>
78
79 <para>Compile and test the package:</para>
80
81<screen><userinput remap="make">make</userinput></screen>
82
83 <para>Install the programs:</para>
84
85<screen><userinput remap="install">make PREFIX=/usr install</userinput></screen>
86
87 <para>Install the shared library:</para>
88<screen><userinput remap="install">cp -av libbz2.so.* /usr/lib
89ln -sv libbz2.so.&bzip2-version; /usr/lib/libbz2.so</userinput></screen>
90
91 <para>Install the shared <command>bzip2</command> binary into the
92 <filename class="directory">/usr/bin</filename> directory, and replace
93 two copies of <command>bzip2</command> with symlinks:</para>
94
95<screen><userinput remap="install">cp -v bzip2-shared /usr/bin/bzip2
96for i in /usr/bin/{bzcat,bunzip2}; do
97 ln -sfv bzip2 $i
98done</userinput></screen>
99
100 <para>Remove an useless static library:</para>
101
102<screen><userinput remap="install">rm -fv /usr/lib/libbz2.a</userinput></screen>
103
104 </sect2>
105
106 <sect2 id="contents-bzip2" role="content">
107 <title>Contents of Bzip2</title>
108
109 <segmentedlist>
110 <segtitle>Installed programs</segtitle>
111 <segtitle>Installed libraries</segtitle>
112 <segtitle>Installed directory</segtitle>
113
114 <seglistitem>
115 <seg>bunzip2 (link to bzip2), bzcat (link to bzip2), bzcmp (link to
116 bzdiff), bzdiff, bzegrep (link to bzgrep), bzfgrep (link to bzgrep),
117 bzgrep, bzip2, bzip2recover, bzless (link to bzmore), and bzmore</seg>
118 <seg>libbz2.so</seg>
119 <seg>/usr/share/doc/bzip2-&bzip2-version;</seg>
120 </seglistitem>
121 </segmentedlist>
122
123 <variablelist>
124 <bridgehead renderas="sect3">Short Descriptions</bridgehead>
125 <?dbfo list-presentation="list"?>
126 <?dbhtml list-presentation="table"?>
127
128 <varlistentry id="bunzip2">
129 <term><command>bunzip2</command></term>
130 <listitem>
131 <para>Decompresses bzipped files</para>
132 <indexterm zone="ch-system-bzip2 bunzip2">
133 <primary sortas="b-bunzip2">bunzip2</primary>
134 </indexterm>
135 </listitem>
136 </varlistentry>
137
138 <varlistentry id="bzcat">
139 <term><command>bzcat</command></term>
140 <listitem>
141 <para>Decompresses to standard output</para>
142 <indexterm zone="ch-system-bzip2 bzcat">
143 <primary sortas="b-bzcat">bzcat</primary>
144 </indexterm>
145 </listitem>
146 </varlistentry>
147
148 <varlistentry id="bzcmp">
149 <term><command>bzcmp</command></term>
150 <listitem>
151 <para>Runs <command>cmp</command> on bzipped files</para>
152 <indexterm zone="ch-system-bzip2 bzcmp">
153 <primary sortas="b-bzcmp">bzcmp</primary>
154 </indexterm>
155 </listitem>
156 </varlistentry>
157
158 <varlistentry id="bzdiff">
159 <term><command>bzdiff</command></term>
160 <listitem>
161 <para>Runs <command>diff</command> on bzipped files</para>
162 <indexterm zone="ch-system-bzip2 bzdiff">
163 <primary sortas="b-bzdiff">bzdiff</primary>
164 </indexterm>
165 </listitem>
166 </varlistentry>
167
168 <varlistentry id="bzegrep">
169 <term><command>bzegrep</command></term>
170 <listitem>
171 <para>Runs <command>egrep</command> on bzipped files</para>
172 <indexterm zone="ch-system-bzip2 bzegrep">
173 <primary sortas="b-bzegrep">bzegrep</primary>
174 </indexterm>
175 </listitem>
176 </varlistentry>
177
178 <varlistentry id="bzfgrep">
179 <term><command>bzfgrep</command></term>
180 <listitem>
181 <para>Runs <command>fgrep</command> on bzipped files</para>
182 <indexterm zone="ch-system-bzip2 bzfgrep">
183 <primary sortas="b-bzfgrep">bzfgrep</primary>
184 </indexterm>
185 </listitem>
186 </varlistentry>
187
188 <varlistentry id="bzgrep">
189 <term><command>bzgrep</command></term>
190 <listitem>
191 <para>Runs <command>grep</command> on bzipped files</para>
192 <indexterm zone="ch-system-bzip2 bzgrep">
193 <primary sortas="b-bzgrep">bzgrep</primary>
194 </indexterm>
195 </listitem>
196 </varlistentry>
197
198 <varlistentry id="bzip2">
199 <term><command>bzip2</command></term>
200 <listitem>
201 <para>Compresses files using the Burrows-Wheeler block sorting text
202 compression algorithm with Huffman coding; the compression rate is
203 better than that achieved by more conventional compressors using
204 <quote>Lempel-Ziv</quote> algorithms, like <command>gzip</command></para>
205 <indexterm zone="ch-system-bzip2 bzip2">
206 <primary sortas="b-bzip2">bzip2</primary>
207 </indexterm>
208 </listitem>
209 </varlistentry>
210
211 <varlistentry id="bzip2recover">
212 <term><command>bzip2recover</command></term>
213 <listitem>
214 <para>Tries to recover data from damaged bzipped files</para>
215 <indexterm zone="ch-system-bzip2 bzip2recover">
216 <primary sortas="b-bzip2recover">bzip2recover</primary>
217 </indexterm>
218 </listitem>
219 </varlistentry>
220
221 <varlistentry id="bzless">
222 <term><command>bzless</command></term>
223 <listitem>
224 <para>Runs <command>less</command> on bzipped files</para>
225 <indexterm zone="ch-system-bzip2 bzless">
226 <primary sortas="b-bzless">bzless</primary>
227 </indexterm>
228 </listitem>
229 </varlistentry>
230
231 <varlistentry id="bzmore">
232 <term><command>bzmore</command></term>
233 <listitem>
234 <para>Runs <command>more</command> on bzipped files</para>
235 <indexterm zone="ch-system-bzip2 bzmore">
236 <primary sortas="b-bzmore">bzmore</primary>
237 </indexterm>
238 </listitem>
239 </varlistentry>
240
241 <varlistentry id="libbz2">
242 <term><filename class="libraryfile">libbz2</filename></term>
243 <listitem>
244 <para>The library implementing lossless, block-sorting data
245 compression, using the Burrows-Wheeler algorithm</para>
246 <indexterm zone="ch-system-bzip2 libbz2">
247 <primary sortas="c-libbz2">libbz2</primary>
248 </indexterm>
249 </listitem>
250 </varlistentry>
251
252 </variablelist>
253
254 </sect2>
255
256</sect1>
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