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git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@3711 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689
171 lines
5.5 KiB
XML
171 lines
5.5 KiB
XML
<?xml version="1.0" encoding="ISO-8859-1"?>
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<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.3//EN" "http://www.oasis-open.org/docbook/xml/4.3/docbookx.dtd" [
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<!ENTITY % general-entities SYSTEM "../general.ent">
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%general-entities;
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]>
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<sect1 id="ch-system-bzip2" xreflabel="Bzip2" role="wrap">
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<title>Bzip2-&bzip2-version;</title>
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<?dbhtml filename="bzip2.html"?>
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<indexterm zone="ch-system-bzip2"><primary sortas="a-Bzip2">Bzip2</primary></indexterm>
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<sect2 role="package"><title/>
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<para>The Bzip2 package contains programs for compressing and decompressing
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files. On text files they achieve a much better compression than the
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traditional <command>gzip</command>.</para>
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<segmentedlist>
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<segtitle>&buildtime;</segtitle>
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<segtitle>&diskspace;</segtitle>
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<seglistitem><seg>0.1 SBU</seg><seg>3.0 MB</seg></seglistitem>
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</segmentedlist>
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<segmentedlist>
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<segtitle>Bzip2 installation depends on</segtitle>
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<seglistitem><seg>Bash, Binutils, Coreutils, Diffutils,
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GCC, Glibc, Make</seg></seglistitem>
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</segmentedlist>
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</sect2>
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<sect2 role="installation">
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<title>Installation of Bzip2</title>
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<para>Prepare Bzip2 for compilation with:</para>
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<screen><userinput>make -f Makefile-libbz2_so
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make clean</userinput></screen>
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<para>The <emphasis>-f</emphasis> flag will cause Bzip2 to be built
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using a different <filename>Makefile</filename> file, in this case the
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<filename>Makefile-libbz2_so</filename> file, which creates a dynamic
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<filename>libbz2.so</filename> library and links the Bzip2 utilities
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against it.</para>
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<para>Compile the package:</para>
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<screen><userinput>make</userinput></screen>
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<para>If you are reinstalling Bzip2, you need to do
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<userinput>rm -f /usr/bin/bz*</userinput> first, otherwise the following
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<command>make install</command> will fail.</para>
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<para>Install the programs:</para>
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<screen><userinput>make install</userinput></screen>
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<para>Now install the shared <command>bzip2</command> binary into the
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<filename class="directory">/bin</filename> directory, then make some
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necessary symbolic links, and clean up:</para>
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<screen><userinput>cp bzip2-shared /bin/bzip2
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cp -a libbz2.so* /lib
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ln -s ../../lib/libbz2.so.1.0 /usr/lib/libbz2.so
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rm /usr/bin/{bunzip2,bzcat,bzip2}
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ln -s bzip2 /bin/bunzip2
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ln -s bzip2 /bin/bzcat</userinput></screen>
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</sect2>
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<sect2 id="contents-bzip2" role="content"><title>Contents of Bzip2</title>
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<segmentedlist>
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<segtitle>Installed programs</segtitle>
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<segtitle>Installed libraries</segtitle>
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<seglistitem><seg>bunzip2 (link to bzip2), bzcat (link to bzip2), bzcmp, bzdiff,
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bzegrep, bzfgrep, bzgrep, bzip2, bzip2recover, bzless and bzmore</seg>
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<seg>libbz2.a, libbz2.so (link to libbz2.so.1.0), libbz2.so.1.0 (link to
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libbz2.so.&bzip2-version;) and libbz2.so.&bzip2-version;</seg></seglistitem>
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</segmentedlist>
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<variablelist><title>Short descriptions</title>
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<varlistentry id="bunzip2">
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<term><command>bunzip2</command></term>
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<listitem>
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<indexterm zone="ch-system-bzip2 bunzip2"><primary sortas="b-bunzip2">bunzip2</primary></indexterm>
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<para>decompresses bzipped files.</para>
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</listitem>
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</varlistentry>
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<varlistentry id="bzcat">
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<term><command>bzcat</command></term>
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<listitem>
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<indexterm zone="ch-system-bzip2 bzcat"><primary sortas="b-bzcat">bzcat</primary></indexterm>
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<para>decompresses to standard output.</para>
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</listitem>
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</varlistentry>
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<varlistentry id="bzcmp">
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<term><command>bzcmp</command></term>
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<listitem>
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<indexterm zone="ch-system-bzip2 bzcmp"><primary sortas="b-bzcmp">bzcmp</primary></indexterm>
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<para>runs cmp on bzipped files.</para>
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</listitem>
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</varlistentry>
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<varlistentry id="bzdiff">
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<term><command>bzdiff</command></term>
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<listitem>
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<indexterm zone="ch-system-bzip2 bzdiff"><primary sortas="b-bzdiff">bzdiff</primary></indexterm>
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<para>runs diff on bzipped files.</para>
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</listitem>
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</varlistentry>
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<varlistentry id="bzgrep">
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<term><command>bzgrep</command></term>
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<listitem>
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<indexterm zone="ch-system-bzip2 bzgrep"><primary sortas="b-bzgrep">bzgrep</primary></indexterm>
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<para>and friends run grep on bzipped files.</para>
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</listitem>
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</varlistentry>
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<varlistentry id="bzip2">
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<term><command>bzip2</command></term>
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<listitem>
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<indexterm zone="ch-system-bzip2 bzip2"><primary sortas="b-bzip2">bzip2</primary></indexterm>
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<para>compresses files using the Burrows-Wheeler
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block sorting text compression algorithm with Huffman coding. The compression
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rate is generally considerably better than that achieved by more conventional
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compressors using LZ77/LZ78, like <command>gzip</command>.</para>
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</listitem>
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</varlistentry>
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<varlistentry id="bzip2recover">
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<term><command>bzip2recover</command></term>
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<listitem>
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<indexterm zone="ch-system-bzip2 bzip2recover"><primary sortas="b-bzip2recover">bzip2recover</primary></indexterm>
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<para>tries to recover data from damaged bzip2 files.</para>
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</listitem>
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</varlistentry>
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<varlistentry id="bzless">
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<term><command>bzless</command></term>
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<listitem>
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<indexterm zone="ch-system-bzip2 bzless"><primary sortas="b-bzless">bzless</primary></indexterm>
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<para>runs less on bzipped files.</para>
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</listitem>
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</varlistentry>
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<varlistentry id="bzmore">
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<term><command>bzmore</command></term>
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<listitem>
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<indexterm zone="ch-system-bzip2 bzmore"><primary sortas="b-bzmore">bzmore</primary></indexterm>
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<para>runs more on bzipped files.</para>
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</listitem>
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</varlistentry>
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<varlistentry id="libbz2">
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<term><command>libbz2*</command></term>
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<listitem>
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<indexterm zone="ch-system-bzip2 libbz2"><primary sortas="c-libbz2*">libbz2*</primary></indexterm>
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<para>is the library implementing lossless,
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block-sorting data compression, using the Burrows-Wheeler algorithm.</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</sect2>
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</sect1>
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