1 | <?xml version="1.0" encoding="ISO-8859-1"?>
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2 | <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN" "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd" [
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3 | <!ENTITY % general-entities SYSTEM "../general.ent">
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4 | %general-entities;
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5 | ]>
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6 | <sect1 id="ch-system-bzip2" role="wrap">
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7 | <title>Bzip2-&bzip2-version;</title>
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8 | <?dbhtml filename="bzip2.html"?>
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9 |
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10 | <indexterm zone="ch-system-bzip2"><primary sortas="a-Bzip2">Bzip2</primary></indexterm>
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11 |
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12 | <sect2 role="package"><title/>
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13 | <para>The Bzip2 package contains programs for compressing and decompressing
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14 | files. Compressing text files with <command>bzip2</command> yields a much better
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15 | compression percentage than with the traditional <command>gzip</command>.</para>
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16 |
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17 | <segmentedlist>
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18 | <segtitle>&buildtime;</segtitle>
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19 | <segtitle>&diskspace;</segtitle>
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20 | <seglistitem><seg>0.1 SBU</seg><seg>3.9 MB</seg></seglistitem>
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21 | </segmentedlist>
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22 |
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23 | <segmentedlist>
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24 | <segtitle>&dependencies;</segtitle>
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25 | <seglistitem><seg>Bash, Binutils, Coreutils, Diffutils,
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26 | GCC, Glibc, and Make</seg></seglistitem>
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27 | </segmentedlist>
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28 | </sect2>
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29 |
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30 | <sect2 role="installation">
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31 | <title>Installation of Bzip2</title>
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32 |
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33 | <para>Prepare Bzip2 for compilation with:</para>
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34 |
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35 | <screen><userinput>make -f Makefile-libbz2_so
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36 | make clean</userinput></screen>
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37 |
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38 | <para>The <parameter>-f</parameter> flag will cause Bzip2 to be built
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39 | using a different <filename>Makefile</filename> file, in this case the
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40 | <filename>Makefile-libbz2_so</filename> file, which creates a dynamic
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41 | <filename class="libraryfile">libbz2.so</filename> library and links the Bzip2
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42 | utilities against it.</para>
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43 |
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44 | <para>Compile the package:</para>
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45 |
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46 | <screen><userinput>make</userinput></screen>
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47 |
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48 | <para>To test the results, issue:
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49 | <userinput>make test</userinput>.</para>
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50 |
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51 | <para>If reinstalling Bzip2, perform
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52 | <userinput>rm -f /usr/bin/bz*</userinput> first, otherwise the following
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53 | <command>make install</command> will fail.</para>
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54 |
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55 | <para>Install the programs:</para>
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56 |
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57 | <screen><userinput>make install</userinput></screen>
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58 |
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59 | <para>Install the shared <command>bzip2</command> binary into the
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60 | <filename class="directory">/bin</filename> directory, make
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61 | some necessary symbolic links, and clean up:</para>
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62 |
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63 | <screen><userinput>cp bzip2-shared /bin/bzip2
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64 | cp -a libbz2.so* /lib
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65 | ln -s ../../lib/libbz2.so.1.0 /usr/lib/libbz2.so
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66 | rm /usr/bin/{bunzip2,bzcat,bzip2}
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67 | ln -s bzip2 /bin/bunzip2
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68 | ln -s bzip2 /bin/bzcat</userinput></screen>
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69 |
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70 | </sect2>
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71 |
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72 |
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73 | <sect2 id="contents-bzip2" role="content"><title>Contents of Bzip2</title>
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74 |
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75 | <segmentedlist>
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76 | <segtitle>Installed programs</segtitle>
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77 | <segtitle>Installed libraries</segtitle>
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78 | <seglistitem><seg>bunzip2 (link to bzip2), bzcat (link to bzip2), bzcmp, bzdiff,
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79 | bzegrep, bzfgrep, bzgrep, bzip2, bzip2recover, bzless, and bzmore</seg>
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80 | <seg>libbz2.[a,so]</seg></seglistitem>
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81 | </segmentedlist>
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82 |
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83 | <variablelist><bridgehead renderas="sect3">Short Descriptions</bridgehead>
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84 | <?dbfo list-presentation="list"?>
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85 | <?dbhtml list-presentation="table"?>
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86 |
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87 | <varlistentry id="bunzip2">
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88 | <term><command>bunzip2</command></term>
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89 | <listitem>
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90 | <para>Decompresses bzipped files</para>
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91 | <indexterm zone="ch-system-bzip2 bunzip2"><primary sortas="b-bunzip2">bunzip2</primary></indexterm>
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92 | </listitem>
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93 | </varlistentry>
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94 |
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95 | <varlistentry id="bzcat">
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96 | <term><command>bzcat</command></term>
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97 | <listitem>
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98 | <para>Decompresses to standard output</para>
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99 | <indexterm zone="ch-system-bzip2 bzcat"><primary sortas="b-bzcat">bzcat</primary></indexterm>
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100 | </listitem>
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101 | </varlistentry>
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102 |
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103 | <varlistentry id="bzcmp">
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104 | <term><command>bzcmp</command></term>
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105 | <listitem>
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106 | <para>Runs <command>cmp</command> on bzipped files</para>
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107 | <indexterm zone="ch-system-bzip2 bzcmp"><primary sortas="b-bzcmp">bzcmp</primary></indexterm>
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108 | </listitem>
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109 | </varlistentry>
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110 |
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111 | <varlistentry id="bzdiff">
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112 | <term><command>bzdiff</command></term>
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113 | <listitem>
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114 | <para>Runs <command>diff</command> on bzipped files</para>
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115 | <indexterm zone="ch-system-bzip2 bzdiff"><primary sortas="b-bzdiff">bzdiff</primary></indexterm>
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116 | </listitem>
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117 | </varlistentry>
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118 |
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119 | <varlistentry id="bzgrep">
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120 | <term><command>bzgrep</command></term>
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121 | <listitem>
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122 | <para>Runs <command>grep</command> on bzipped files</para>
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123 | <indexterm zone="ch-system-bzip2 bzgrep"><primary sortas="b-bzgrep">bzgrep</primary></indexterm>
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124 | </listitem>
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125 | </varlistentry>
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126 |
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127 | <varlistentry id="bzegrep">
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128 | <term><command>bzegrep</command></term>
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129 | <listitem>
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130 | <para>Runs <command>egrep</command> on bzipped files</para>
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131 | <indexterm zone="ch-system-bzip2 bzegrep"><primary sortas="b-bzegrep">bzegrep</primary></indexterm>
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132 | </listitem>
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133 | </varlistentry>
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134 |
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135 | <varlistentry id="bzfgrep">
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136 | <term><command>bzfgrep</command></term>
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137 | <listitem>
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138 | <para>Runs <command>fgrep</command> on bzipped files</para>
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139 | <indexterm zone="ch-system-bzip2 bzfgrep"><primary sortas="b-bzfgrep">bzfgrep</primary></indexterm>
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140 | </listitem>
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141 | </varlistentry>
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142 |
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143 | <varlistentry id="bzip2">
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144 | <term><command>bzip2</command></term>
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145 | <listitem>
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146 | <para>Compresses files using the Burrows-Wheeler block sorting text
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147 | compression algorithm with Huffman coding; the compression rate is
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148 | better than that achieved by more conventional compressors using
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149 | <quote>Lempel-Ziv</quote> algorithms, like <command>gzip</command></para>
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150 | <indexterm zone="ch-system-bzip2 bzip2"><primary sortas="b-bzip2">bzip2</primary></indexterm>
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151 | </listitem>
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152 | </varlistentry>
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153 |
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154 | <varlistentry id="bzip2recover">
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155 | <term><command>bzip2recover</command></term>
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156 | <listitem>
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157 | <para>Tries to recover data from damaged bzipped files</para>
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158 | <indexterm zone="ch-system-bzip2 bzip2recover"><primary sortas="b-bzip2recover">bzip2recover</primary></indexterm>
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159 | </listitem>
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160 | </varlistentry>
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161 |
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162 | <varlistentry id="bzless">
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163 | <term><command>bzless</command></term>
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164 | <listitem>
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165 | <para>Runs <command>less</command> on bzipped files</para>
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166 | <indexterm zone="ch-system-bzip2 bzless"><primary sortas="b-bzless">bzless</primary></indexterm>
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167 | </listitem>
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168 | </varlistentry>
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169 |
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170 | <varlistentry id="bzmore">
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171 | <term><command>bzmore</command></term>
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172 | <listitem>
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173 | <para>Runs <command>more</command> on bzipped files</para>
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174 | <indexterm zone="ch-system-bzip2 bzmore"><primary sortas="b-bzmore">bzmore</primary></indexterm>
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175 | </listitem>
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176 | </varlistentry>
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177 |
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178 | <varlistentry id="libbz2">
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179 | <term><filename class="libraryfile">libbz2*</filename></term>
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180 | <listitem>
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181 | <para>The library implementing lossless, block-sorting data
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182 | compression, using the Burrows-Wheeler algorithm</para>
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183 | <indexterm zone="ch-system-bzip2 libbz2"><primary sortas="c-libbz2*">libbz2*</primary></indexterm>
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184 | </listitem>
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185 | </varlistentry>
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186 | </variablelist>
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187 |
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188 | </sect2>
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189 |
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190 | </sect1>
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191 |
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