1 | <?xml version="1.0" encoding="ISO-8859-1"?>
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2 | <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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3 | "http://www.oasis-open.org/docbook/xml/4.5/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 | <!ENTITY unzip-download-http "http://downloads.sourceforge.net/infozip/unzip552.tar.gz">
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8 | <!-- <!ENTITY unzip-download-http "http://www.mirrorservice.org/sites/ftp.info-zip.org/pub/infozip/src/unzip552.tar.gz"> -->
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9 | <!-- <!ENTITY unzip-download-ftp "ftp://ftp.info-zip.org/pub/infozip/src/unzip552.tar.gz"> -->
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10 | <!ENTITY unzip-download-ftp "ftp://tug.ctan.org/tex-archive/tools/zip/info-zip/src/unzip552.tar.gz">
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11 | <!ENTITY unzip-md5sum "9d23919999d6eac9217d1f41472034a9">
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12 | <!ENTITY unzip-size "1.1 MB">
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13 | <!ENTITY unzip-buildsize "6.7 MB">
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14 | <!ENTITY unzip-time "0.1 SBU">
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15 | ]>
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16 |
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17 | <sect1 id="unzip" xreflabel="UnZip-&unzip-version;">
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18 | <?dbhtml filename="unzip.html"?>
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19 |
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20 | <sect1info>
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21 | <othername>$LastChangedBy$</othername>
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22 | <date>$Date$</date>
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23 | </sect1info>
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24 |
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25 | <title>UnZip-&unzip-version;</title>
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26 |
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27 | <indexterm zone="unzip">
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28 | <primary sortas="a-UnZip">UnZip</primary>
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29 | </indexterm>
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30 |
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31 | <sect2 role="package">
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32 | <title>Introduction to UnZip</title>
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33 |
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34 | <para>The <application>UnZip</application> package contains
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35 | <filename>ZIP</filename> extraction utilities. These are useful for
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36 | extracting files from <filename>ZIP</filename> archives.
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37 | <filename>ZIP</filename> archives are created with
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38 | <application>PKZIP</application> or <application>Info-ZIP</application>
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39 | utilities, primarily in a DOS environment.</para>
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40 |
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41 | <caution>
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42 | <para>The <application>UnZip</application> package has some locale
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43 | related issues. See the discussion below in
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44 | <xref linkend="unzip-locale-issues"/>. A more general
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45 | discussion of these problems can be found in the
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46 | <xref linkend="locale-assumed-encoding"/>
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47 | section of the
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48 | <xref linkend="locale-issues"/> page.</para>
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49 | </caution>
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50 |
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51 | <bridgehead renderas="sect3">Package Information</bridgehead>
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52 | <itemizedlist spacing="compact">
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53 | <listitem>
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54 | <para>Download (HTTP): <ulink url="&unzip-download-http;"/></para>
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55 | </listitem>
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56 | <listitem>
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57 | <para>Download (FTP): <ulink url="&unzip-download-ftp;"/></para>
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58 | </listitem>
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59 | <listitem>
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60 | <para>Download MD5 sum: &unzip-md5sum;</para>
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61 | </listitem>
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62 | <listitem>
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63 | <para>Download size: &unzip-size;</para>
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64 | </listitem>
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65 | <listitem>
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66 | <para>Estimated disk space required: &unzip-buildsize;</para>
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67 | </listitem>
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68 | <listitem>
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69 | <para>Estimated build time: &unzip-time;</para>
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70 | </listitem>
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71 | </itemizedlist>
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72 |
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73 | <bridgehead renderas="sect3">Additional Downloads</bridgehead>
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74 | <itemizedlist spacing='compact'>
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75 | <listitem>
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76 | <para>Required patch: <ulink
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77 | url="&patch-root;/unzip-&unzip-version;-security_fix-1.patch"/></para>
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78 | </listitem>
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79 | </itemizedlist>
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80 |
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81 | <para condition="html" role="usernotes">User Notes:
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82 | <ulink url="&blfs-wiki;/unzip"/></para>
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83 |
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84 | </sect2>
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85 |
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86 | <sect2 id="unzip-locale-issues">
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87 | <title>UnZip Locale Issues</title>
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88 |
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89 | <note>
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90 | <para>Use of <application>UnZip</application> in the
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91 | <application>JDK</application>, <application>Mozilla</application>,
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92 | <application>DocBook</application> or any other BLFS package
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93 | installation is not a problem, as BLFS instructions never use
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94 | <application>UnZip</application> to extract a file with non-ASCII
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95 | characters in the file's name.</para>
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96 | </note>
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97 |
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98 | <para>The <application>UnZip</application> package assumes that filenames
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99 | stored in the ZIP archives created on non-Unix systems are encoded in
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100 | CP850, and that they should be converted to ISO-8859-1 when writing files
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101 | onto the filesystem. Such assumptions are not always valid. In fact,
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102 | inside the ZIP archive, filenames are encoded in the DOS codepage that is
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103 | in use in the relevant country, and the filenames on disk should be in
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104 | the locale encoding. In MS Windows, the OemToChar() C function (from
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105 | <filename>User32.DLL</filename>) does the correct conversion (which is
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106 | indeed the conversion from CP850 to a superset of ISO-8859-1 if MS
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107 | Windows is set up to use the US English language), but there is no
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108 | equivalent in Linux.</para>
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109 |
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110 | <para>When using <command>unzip</command> to unpack a ZIP archive
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111 | containing non-ASCII filenames, the filenames are damaged because
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112 | <command>unzip</command> uses improper conversion when any of its
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113 | encoding assumptions are incorrect. For example, in the ru_RU.KOI8-R
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114 | locale, conversion of filenames from CP866 to KOI8-R is required, but
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115 | conversion from CP850 to ISO-8859-1 is done, which produces filenames
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116 | consisting of undecipherable characters instead of words (the closest
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117 | equivalent understandable example for English-only users is rot13). There
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118 | are several ways around this limitation:</para>
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119 |
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120 | <para>1) For unpacking ZIP archives with filenames containing non-ASCII
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121 | characters, use <ulink url="http://www.winzip.com/">WinZip</ulink> while
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122 | running the <ulink url="http://www.winehq.com/">Wine</ulink> Windows
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123 | emulator.</para>
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124 |
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125 | <para>2) After running <command>unzip</command>, fix the damage made to
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126 | the filenames using the <command>convmv</command> tool
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127 | (<ulink url="http://j3e.de/linux/convmv/"/>). The following is an example
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128 | for the ru_RU.KOI8-R locale:</para>
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129 |
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130 | <blockquote>
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131 | <para>Step 1. Undo the conversion done by
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132 | <command>unzip</command>:</para>
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133 |
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134 | <screen><userinput>convmv -f iso-8859-1 -t cp850 -r --nosmart --notest \
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135 | <replaceable></path/to/unzipped/files></replaceable></userinput></screen>
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136 |
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137 | <para>Step 2. Do the correct conversion instead:</para>
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138 |
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139 | <screen><userinput>convmv -f cp866 -t koi8-r -r --nosmart --notest \
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140 | <replaceable></path/to/unzipped/files></replaceable></userinput></screen>
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141 | </blockquote>
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142 |
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143 | <para>3) Apply this patch to unzip:
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144 | <ulink url="https://bugzilla.altlinux.ru/attachment.cgi?id=532"/>.
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145 | It will apply with some offsets.</para>
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146 |
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147 | <para>It allows to specify the assumed filename encoding in the ZIP
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148 | archive using the <option>-O charset_name</option> option and the
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149 | on-disk filename encoding using the <option>-I charset_name</option>
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150 | option. Defaults: the on-disk filename encoding is the locale encoding,
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151 | the encoding inside the ZIP archive is guessed according to the builtin
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152 | table based on the locale encoding. For US English users, this still
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153 | means that unzip converts from CP850 to ISO-8859-1 by default.</para>
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154 |
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155 | <para>Caveat: this method works only with 8-bit locale encodings, not
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156 | with UTF-8. Attempting to use a patched <command>unzip</command> in UTF-8
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157 | locales may result in a segmentation fault and is probably a security
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158 | risk.</para>
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159 |
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160 | </sect2>
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161 |
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162 | <sect2 role="installation">
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163 | <title>Installation of UnZip</title>
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164 |
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165 | <para>Note that if you applied the patch described above for locale issues,
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166 | the required security patch will have some offsets. Now install
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167 | <application>UnZip</application> by running the following commands:</para>
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168 |
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169 | <screen><userinput>patch -Np1 -i ../unzip-&unzip-version;-security_fix-1.patch &&
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170 | make -f unix/Makefile LOCAL_UNZIP=-D_FILE_OFFSET_BITS=64 linux</userinput></screen>
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171 |
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172 | <para>To test the results, issue: <command>make check</command>.</para>
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173 |
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174 | <para>Now, as the <systemitem class="username">root</systemitem> user:</para>
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175 |
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176 | <screen role="root"><userinput>make prefix=/usr install</userinput></screen>
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177 |
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178 | </sect2>
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179 |
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180 | <sect2 role="commands">
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181 | <title>Command Explanations</title>
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182 |
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183 | <para><parameter>linux</parameter>:
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184 | This target in the <filename>Makefile</filename> makes assumptions
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185 | that are useful for a Linux system when compiling the executables.
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186 | To obtain alternatives to this target, use <command>make list</command></para>
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187 |
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188 | <para><parameter>LOCAL_UNZIP=...</parameter>:
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189 | This sets the compilation flags to allow <application>UnZip</application>
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190 | to handle files up to 4 GB.</para>
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191 |
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192 | </sect2>
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193 |
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194 | <sect2 role="content">
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195 | <title>Contents</title>
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196 |
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197 | <segmentedlist>
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198 | <segtitle>Installed Programs</segtitle>
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199 | <segtitle>Installed Libraries</segtitle>
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200 | <segtitle>Installed Directories</segtitle>
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201 |
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202 | <seglistitem>
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203 | <seg>funzip, unzip, unzipfsx, zipgrep, and zipinfo</seg>
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204 | <seg>None</seg>
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205 | <seg>None</seg>
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206 | </seglistitem>
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207 | </segmentedlist>
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208 |
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209 | <variablelist>
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210 | <bridgehead renderas="sect3">Short Descriptions</bridgehead>
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211 | <?dbfo list-presentation="list"?>
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212 | <?dbhtml list-presentation="table"?>
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213 |
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214 | <varlistentry id="funzip">
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215 | <term><command>funzip</command></term>
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216 | <listitem>
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217 | <para>allows the output of <command>unzip</command> commands to be
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218 | redirected.</para>
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219 | <indexterm zone="unzip funzip">
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220 | <primary sortas="b-funzip">funzip</primary>
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221 | </indexterm>
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222 | </listitem>
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223 | </varlistentry>
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224 |
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225 | <varlistentry id="unzip-prog">
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226 | <term><command>unzip</command></term>
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227 | <listitem>
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228 | <para>lists, tests or extracts files from a <filename>ZIP</filename>
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229 | archive.</para>
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230 | <indexterm zone="unzip unzip-prog">
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231 | <primary sortas="b-unzip">unzip</primary>
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232 | </indexterm>
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233 | </listitem>
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234 | </varlistentry>
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235 |
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236 | <varlistentry id="unzipfsx">
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237 | <term><command>unzipfsx</command></term>
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238 | <listitem>
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239 | <para>is a self-extracting stub that can be prepended to a
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240 | <filename>ZIP</filename> archive. Files in this format allow the
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241 | recipient to decompress the archive without installing
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242 | <application>UnZip</application>.</para>
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243 | <indexterm zone="unzip unzipfsx">
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244 | <primary sortas="b-unzipfsx">unzipfsx</primary>
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245 | </indexterm>
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246 | </listitem>
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247 | </varlistentry>
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248 |
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249 | <varlistentry id="zipgrep">
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250 | <term><command>zipgrep</command></term>
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251 | <listitem>
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252 | <para>searches files in a <filename>ZIP</filename> archive for
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253 | lines matching a pattern.</para>
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254 | <indexterm zone="unzip zipgrep">
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255 | <primary sortas="b-zipgrep">zipgrep</primary>
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256 | </indexterm>
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257 | </listitem>
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258 | </varlistentry>
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259 |
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260 | <varlistentry id="zipinfo">
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261 | <term><command>zipinfo</command></term>
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262 | <listitem>
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263 | <para>produces technical information about the files in a
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264 | <filename>ZIP</filename> archive, including file access permissions,
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265 | encryption status, type of compression, etc.</para>
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266 | <indexterm zone="unzip zipinfo">
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267 | <primary sortas="b-zipinfo">zipinfo</primary>
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268 | </indexterm>
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269 | </listitem>
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270 | </varlistentry>
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271 |
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272 | <varlistentry id="libunzip">
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273 | <term><filename class='libraryfile'>libunzip.so</filename></term>
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274 | <listitem>
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275 | <para>contains the API functions required by the
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276 | <application>UnZip</application> programs.</para>
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277 | <indexterm zone="unzip libunzip">
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278 | <primary sortas="c-libunzip">libunzip.so</primary>
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279 | </indexterm>
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280 | </listitem>
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281 | </varlistentry>
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282 |
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283 | </variablelist>
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284 |
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285 | </sect2>
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286 |
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287 | </sect1>
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