1 | <?xml version="1.0" encoding="ISO-8859-1"?> |
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2 | <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN" |
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3 | "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd" [ |
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4 | <!ENTITY % general-entities SYSTEM "../../general.ent"> |
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5 | %general-entities; |
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6 | ]> |
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7 | |
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8 | <sect1 id="ch-system-bzip2" role="wrap"> |
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9 | <?dbhtml filename="bzip2.html"?> |
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10 | |
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11 | <title>Bzip2-&bzip2-version;</title> |
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12 | |
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13 | <indexterm zone="ch-system-bzip2"> |
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14 | <primary sortas="a-Bzip2">Bzip2</primary> |
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15 | </indexterm> |
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16 | |
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17 | <sect2 role="package"> |
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18 | <title/> |
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19 | |
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20 | <para>The Bzip2 package contains programs for compressing and |
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21 | decompressing files. Compressing text files with <command>bzip2</command> |
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22 | yields a much better compression percentage than with the traditional |
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23 | <command>gzip</command>.</para> |
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24 | |
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25 | <segmentedlist> |
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26 | <segtitle>&dependencies;</segtitle> |
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27 | |
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28 | <seglistitem> |
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29 | <seg>Bash, Binutils, Coreutils, Diffutils, GCC, Glibc, Make, |
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30 | and Patch</seg> |
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31 | </seglistitem> |
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32 | </segmentedlist> |
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33 | |
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34 | </sect2> |
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35 | |
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36 | <sect2 role="installation"> |
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37 | <title>Installation of Bzip2</title> |
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38 | |
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39 | <para os="p1">Apply a patch to install the documentation for this |
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40 | package:</para> |
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41 | |
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42 | <screen os="p2"><userinput>patch -Np1 -i ../&bzip2-docs-patch;</userinput></screen> |
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43 | |
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44 | <para os="p3">The <command>bzgrep</command> command does not escape '|' and |
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45 | '&' in filenames passed to it. This allows arbitrary commands to be |
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46 | executed with the privileges of the user running <command>bzgrep</command>. |
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47 | Apply the following patch to address this:</para> |
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48 | |
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49 | <screen os="p4"><userinput>patch -Np1 -i ../&bzip2-bzgrep-patch;</userinput></screen> |
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50 | |
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51 | <para os="p5">The <command>bzdiff</command> script depends on tempfile. |
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52 | We remove that dependency with this patch:</para> |
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53 | |
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54 | <screen os="p6"><userinput>patch -Np1 -i ../&bzip2-remove_tempfile-patch;</userinput></screen> |
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55 | |
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56 | <para os="a">The Bzip2 package does not contain a <command>configure</command> |
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57 | script. Compile it with:</para> |
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58 | |
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59 | <screen os="b"><userinput>make -f Makefile-libbz2_so |
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60 | make clean</userinput></screen> |
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61 | |
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62 | <para os="c">The <parameter>-f</parameter> flag will cause Bzip2 to be built |
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63 | using a different <filename>Makefile</filename> file, in this case the |
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64 | <filename>Makefile-libbz2_so</filename> file, which creates a dynamic |
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65 | <filename class="libraryfile">libbz2.so</filename> library and links the |
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66 | Bzip2 utilities against it.</para> |
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67 | |
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68 | <para os="d">Recompile the package using a non-shared library and test it.</para> |
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69 | |
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70 | <screen os="e"><userinput>make</userinput></screen> |
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71 | |
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72 | <para os="f">If reinstalling Bzip2, perform |
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73 | <userinput>rm -vf /usr/bin/bz*</userinput> first, otherwise the |
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74 | following <command>make install</command> will fail.</para> |
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75 | |
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76 | <para os="g">Install the programs:</para> |
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77 | |
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78 | <screen os="h"><userinput>make install</userinput></screen> |
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79 | |
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80 | <para os="i">Install the shared <command>bzip2</command> binary into the |
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81 | <filename class="directory">/bin</filename> directory, make |
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82 | some necessary symbolic links, and clean up:</para> |
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83 | |
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84 | <screen os="j"><userinput>cp -v bzip2-shared /bin/bzip2 |
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85 | cp -av libbz2.so* /lib |
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86 | ln -sv ../../lib/libbz2.so.1.0 /usr/lib/libbz2.so |
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87 | rm -v /usr/bin/{bunzip2,bzcat,bzip2} |
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88 | ln -sv bzip2 /bin/bunzip2 |
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89 | ln -sv bzip2 /bin/bzcat</userinput></screen> |
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90 | |
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91 | </sect2> |
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92 | |
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93 | <sect2 id="contents-bzip2" role="content"> |
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94 | <title>Contents of Bzip2</title> |
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95 | |
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96 | <segmentedlist> |
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97 | <segtitle>Installed programs</segtitle> |
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98 | <segtitle>Installed libraries</segtitle> |
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99 | |
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100 | <seglistitem> |
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101 | <seg>bunzip2 (link to bzip2), bzcat (link to bzip2), bzcmp, bzdiff, |
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102 | bzegrep, bzfgrep, bzgrep, bzip2, bzip2recover, bzless, and bzmore</seg> |
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103 | <seg>libbz2.a, libbz2.so (link to libbz2.so.1.0), libbz2.so.1.0 (link to |
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104 | libbz2.so.&bzip2-version;), and libbz2.so.&bzip2-version;</seg> |
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105 | </seglistitem> |
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106 | </segmentedlist> |
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107 | |
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108 | <variablelist> |
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109 | <bridgehead renderas="sect3">Short Descriptions</bridgehead> |
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110 | <?dbfo list-presentation="list"?> |
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111 | <?dbhtml list-presentation="table"?> |
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112 | |
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113 | <varlistentry id="bunzip2"> |
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114 | <term><command>bunzip2</command></term> |
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115 | <listitem> |
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116 | <para>Decompresses bzipped files</para> |
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117 | <indexterm zone="ch-system-bzip2 bunzip2"> |
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118 | <primary sortas="b-bunzip2">bunzip2</primary> |
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119 | </indexterm> |
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120 | </listitem> |
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121 | </varlistentry> |
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122 | |
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123 | <varlistentry id="bzcat"> |
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124 | <term><command>bzcat</command></term> |
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125 | <listitem> |
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126 | <para>Decompresses to standard output</para> |
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127 | <indexterm zone="ch-system-bzip2 bzcat"> |
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128 | <primary sortas="b-bzcat">bzcat</primary> |
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129 | </indexterm> |
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130 | </listitem> |
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131 | </varlistentry> |
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132 | |
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133 | <varlistentry id="bzcmp"> |
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134 | <term><command>bzcmp</command></term> |
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135 | <listitem> |
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136 | <para>Runs <command>cmp</command> on bzipped files</para> |
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137 | <indexterm zone="ch-system-bzip2 bzcmp"> |
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138 | <primary sortas="b-bzcmp">bzcmp</primary> |
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139 | </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="bzdiff"> |
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144 | <term><command>bzdiff</command></term> |
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145 | <listitem> |
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146 | <para>Runs <command>diff</command> on bzipped files</para> |
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147 | <indexterm zone="ch-system-bzip2 bzdiff"> |
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148 | <primary sortas="b-bzdiff">bzdiff</primary> |
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149 | </indexterm> |
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150 | </listitem> |
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151 | </varlistentry> |
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152 | |
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153 | <varlistentry id="bzgrep"> |
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154 | <term><command>bzgrep</command></term> |
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155 | <listitem> |
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156 | <para>Runs <command>grep</command> on bzipped files</para> |
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157 | <indexterm zone="ch-system-bzip2 bzgrep"> |
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158 | <primary sortas="b-bzgrep">bzgrep</primary> |
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159 | </indexterm> |
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160 | </listitem> |
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161 | </varlistentry> |
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162 | |
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163 | <varlistentry id="bzegrep"> |
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164 | <term><command>bzegrep</command></term> |
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165 | <listitem> |
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166 | <para>Runs <command>egrep</command> on bzipped files</para> |
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167 | <indexterm zone="ch-system-bzip2 bzegrep"> |
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168 | <primary sortas="b-bzegrep">bzegrep</primary> |
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169 | </indexterm> |
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170 | </listitem> |
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171 | </varlistentry> |
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172 | |
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173 | <varlistentry id="bzfgrep"> |
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174 | <term><command>bzfgrep</command></term> |
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175 | <listitem> |
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176 | <para>Runs <command>fgrep</command> on bzipped files</para> |
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177 | <indexterm zone="ch-system-bzip2 bzfgrep"> |
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178 | <primary sortas="b-bzfgrep">bzfgrep</primary> |
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179 | </indexterm> |
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180 | </listitem> |
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181 | </varlistentry> |
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182 | |
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183 | <varlistentry id="bzip2"> |
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184 | <term><command>bzip2</command></term> |
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185 | <listitem> |
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186 | <para>Compresses files using the Burrows-Wheeler block sorting text |
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187 | compression algorithm with Huffman coding; the compression rate is |
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188 | better than that achieved by more conventional compressors using |
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189 | <quote>Lempel-Ziv</quote> algorithms, like <command>gzip</command></para> |
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190 | <indexterm zone="ch-system-bzip2 bzip2"> |
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191 | <primary sortas="b-bzip2">bzip2</primary> |
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192 | </indexterm> |
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193 | </listitem> |
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194 | </varlistentry> |
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195 | |
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196 | <varlistentry id="bzip2recover"> |
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197 | <term><command>bzip2recover</command></term> |
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198 | <listitem> |
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199 | <para>Tries to recover data from damaged bzipped files</para> |
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200 | <indexterm zone="ch-system-bzip2 bzip2recover"> |
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201 | <primary sortas="b-bzip2recover">bzip2recover</primary> |
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202 | </indexterm> |
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203 | </listitem> |
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204 | </varlistentry> |
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205 | |
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206 | <varlistentry id="bzless"> |
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207 | <term><command>bzless</command></term> |
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208 | <listitem> |
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209 | <para>Runs <command>less</command> on bzipped files</para> |
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210 | <indexterm zone="ch-system-bzip2 bzless"> |
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211 | <primary sortas="b-bzless">bzless</primary> |
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212 | </indexterm> |
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213 | </listitem> |
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214 | </varlistentry> |
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215 | |
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216 | <varlistentry id="bzmore"> |
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217 | <term><command>bzmore</command></term> |
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218 | <listitem> |
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219 | <para>Runs <command>more</command> on bzipped files</para> |
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220 | <indexterm zone="ch-system-bzip2 bzmore"> |
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221 | <primary sortas="b-bzmore">bzmore</primary> |
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222 | </indexterm> |
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223 | </listitem> |
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224 | </varlistentry> |
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225 | |
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226 | <varlistentry id="libbz2"> |
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227 | <term><filename class="libraryfile">libbz2*</filename></term> |
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228 | <listitem> |
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229 | <para>The library implementing lossless, block-sorting data |
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230 | compression, using the Burrows-Wheeler algorithm</para> |
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231 | <indexterm zone="ch-system-bzip2 libbz2"> |
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232 | <primary sortas="c-libbz2*">libbz2*</primary> |
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233 | </indexterm> |
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234 | </listitem> |
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235 | </varlistentry> |
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236 | |
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237 | </variablelist> |
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238 | |
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239 | </sect2> |
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240 | |
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241 | </sect1> |
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