1 | <?xml version="1.0" encoding="UTF-8"?>
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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 "&sourceforge-dl;/infozip/unzip60.tar.gz">
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8 | <!ENTITY unzip-download-ftp " ">
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9 | <!ENTITY unzip-md5sum "62b490407489521db863b523a7f86375">
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10 | <!ENTITY unzip-size "1.3 MB">
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11 | <!ENTITY unzip-buildsize "9 MB">
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12 | <!ENTITY unzip-time "less than 0.1 SBU">
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13 | ]>
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14 |
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15 | <sect1 id="unzip" xreflabel="UnZip-&unzip-version;">
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16 | <?dbhtml filename="unzip.html"?>
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17 |
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18 |
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19 | <title>UnZip-&unzip-version;</title>
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20 |
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21 | <indexterm zone="unzip">
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22 | <primary sortas="a-UnZip">UnZip</primary>
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23 | </indexterm>
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24 |
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25 | <sect2 role="package">
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26 | <title>Introduction to UnZip</title>
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27 |
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28 | <para>
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29 | The <application>UnZip</application> package contains
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30 | <filename>ZIP</filename> extraction utilities. These are useful for
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31 | extracting files from <filename>ZIP</filename> archives.
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32 | <filename>ZIP</filename> archives are created with
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33 | <application>PKZIP</application> or <application>Info-ZIP</application>
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34 | utilities, primarily in a DOS environment.
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35 | </para>
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36 |
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37 | &lfs122_checked;
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38 |
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39 | <caution>
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40 | <para>
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41 | The previous version of the <application>UnZip</application>
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42 | package had some locale related issues. Currently there are no BLFS
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43 | editors capable of testing these locale issues. Therefore, the
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44 | locale related information is left on this page, but has not been
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45 | tested. A more general discussion of these problems can be found in
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46 | the <xref linkend="locale-assumed-encoding"/> section of the <xref
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47 | linkend="locale-issues"/> page.
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48 | </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>
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55 | Download (HTTP): <ulink url="&unzip-download-http;"/>
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56 | </para>
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57 | </listitem>
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58 | <listitem>
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59 | <para>
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60 | Download (FTP): <ulink url="&unzip-download-ftp;"/>
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61 | </para>
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62 | </listitem>
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63 | <listitem>
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64 | <para>
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65 | Download MD5 sum: &unzip-md5sum;
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66 | </para>
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67 | </listitem>
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68 | <listitem>
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69 | <para>
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70 | Download size: &unzip-size;
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71 | </para>
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72 | </listitem>
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73 | <listitem>
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74 | <para>
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75 | Estimated disk space required: &unzip-buildsize;
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76 | </para>
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77 | </listitem>
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78 | <listitem>
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79 | <para>
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80 | Estimated build time: &unzip-time;
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81 | </para>
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82 | </listitem>
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83 | </itemizedlist>
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84 |
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85 | <bridgehead renderas="sect3">Additional Downloads</bridgehead>
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86 | <itemizedlist spacing='compact'>
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87 | <listitem>
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88 | <para>
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89 | Required patch: <ulink
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90 | url="&patch-root;/unzip-&unzip-version;-consolidated_fixes-1.patch"/>
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91 | </para>
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92 | </listitem>
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93 | <listitem>
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94 | <para>
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95 | Required patch: <ulink
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96 | url="&patch-root;/unzip-&unzip-version;-gcc14-1.patch"/>
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97 | </para>
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98 | </listitem>
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99 | </itemizedlist>
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100 |
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101 | </sect2>
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102 |
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103 | <sect2 id="unzip-locale-issues">
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104 | <title>UnZip Locale Issues</title>
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105 |
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106 | <note>
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107 | <para>
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108 | Use of <application>UnZip</application> in the
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109 | <application>JDK</application>, <application>Mozilla</application>,
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110 | <application>DocBook</application> or any other BLFS package
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111 | installation is not a problem, as BLFS instructions never use
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112 | <application>UnZip</application> to extract a file with non-ASCII
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113 | characters in the file's name.
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114 | </para>
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115 | </note>
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116 |
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117 | <para>
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118 | These issues are thought to be fixed in the patch. But since none
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119 | of the editors have data to test this, the following workarounds are
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120 | retained in case they might still be needed.
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121 | </para>
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122 |
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123 | <para>
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124 | The <application>UnZip</application> package assumes that filenames
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125 | stored in the ZIP archives created on non-Unix systems are encoded in
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126 | CP850, and that they should be converted to ISO-8859-1 when writing files
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127 | onto the filesystem. Such assumptions are not always valid. In fact,
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128 | inside the ZIP archive, filenames are encoded in the DOS codepage that is
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129 | in use in the relevant country, and the filenames on disk should be in
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130 | the locale encoding. In MS Windows, the OemToChar() C function (from
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131 | <filename>User32.DLL</filename>) does the correct conversion (which is
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132 | indeed the conversion from CP850 to a superset of ISO-8859-1 if MS
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133 | Windows is set up to use the US English language), but there is no
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134 | equivalent in Linux.
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135 | </para>
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136 |
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137 | <para>
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138 | When using <command>unzip</command> to unpack a ZIP archive
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139 | containing non-ASCII filenames, the filenames are damaged because
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140 | <command>unzip</command> uses improper conversion when any of its
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141 | encoding assumptions are incorrect. For example, in the ru_RU.KOI8-R
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142 | locale, conversion of filenames from CP866 to KOI8-R is required, but
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143 | conversion from CP850 to ISO-8859-1 is done, which produces filenames
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144 | consisting of undecipherable characters instead of words (the closest
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145 | equivalent understandable example for English-only users is rot13). There
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146 | are several ways around this limitation:
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147 | </para>
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148 |
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149 | <para>
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150 | 1) For unpacking ZIP archives with filenames containing non-ASCII
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151 | characters, use <ulink url="https://www.winzip.com/">WinZip</ulink> while
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152 | running the <ulink url="https://www.winehq.org/">Wine</ulink> Windows
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153 | emulator.
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154 | </para>
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155 |
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156 | <para>
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157 | 2) Use <command>bsdtar -xf</command> from
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158 | <xref role="nodep" linkend="libarchive"/> to unpack the ZIP archive.
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159 | Then fix the damage made to
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160 | the filenames using the <command>convmv</command> tool
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161 | (<ulink url="https://j3e.de/linux/convmv/"/>). The following is an example
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162 | for the zh_CN.UTF-8 locale:
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163 | </para>
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164 |
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165 | <screen><userinput>convmv -f cp936 -t utf-8 -r --nosmart --notest \
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166 | <replaceable></path/to/unzipped/files></replaceable></userinput></screen>
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167 | <!--
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168 | <para>
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169 | 3) Apply the optional
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170 | <filename>unzip-5.50-alt-iconv-v1.1.patch</filename> patch to
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171 | <application>UnZip</application>. It will apply with some offsets.
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172 | </para>
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173 |
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174 | <para>
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175 | It allows to specify the assumed filename encoding in the ZIP
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176 | archive using the <option>-O charset_name</option> option and the
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177 | on-disk filename encoding using the <option>-I charset_name</option>
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178 | option. Defaults: the on-disk filename encoding is the locale encoding,
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179 | the encoding inside the ZIP archive is guessed according to the builtin
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180 | table based on the locale encoding. For US English users, this still
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181 | means that unzip converts from CP850 to ISO-8859-1 by default.
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182 | </para>
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183 |
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184 | <para>
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185 | Caveat: this method works only with 8-bit locale encodings, not
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186 | with UTF-8. Attempting to use a patched <command>unzip</command> in UTF-8
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187 | locales may result in a segmentation fault and is probably a security
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188 | risk.
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189 | </para>
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190 | -->
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191 | </sect2>
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192 |
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193 | <sect2 role="installation">
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194 | <title>Installation of UnZip</title>
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195 |
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196 | <para>
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197 | First apply the patches:
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198 | </para>
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199 |
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200 | <screen><userinput remap="pre">patch -Np1 -i ../unzip-&unzip-version;-consolidated_fixes-1.patch
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201 | patch -Np1 -i ../unzip-&unzip-version;-gcc14-1.patch</userinput></screen>
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202 |
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203 | <para>
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204 | Now compile the package:
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205 | </para>
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206 |
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207 | <screen><userinput>make -f unix/Makefile generic</userinput></screen>
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208 |
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209 | <para>
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210 | The test suite does not work for target <literal>generic</literal>.
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211 | </para>
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212 |
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213 | <para>
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214 | Now, as the <systemitem class="username">root</systemitem> user:
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215 | </para>
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216 |
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217 | <screen role="root"><userinput>make prefix=/usr MANDIR=/usr/share/man/man1 \
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218 | -f unix/Makefile install</userinput></screen>
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219 |
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220 | </sect2>
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221 |
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222 | <sect2 role="commands">
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223 | <title>Command Explanations</title>
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224 |
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225 | <para>
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226 | <command>make -f unix/Makefile generic</command>:
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227 | This target begins by running a configure script (unlike the older
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228 | targets such as linux and linux_noasm) which creates a flags file that
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229 | is then used in the build. This ensures that the 32-bit x86 build
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230 | receives the right flags to unzip files which are larger than 2 GB
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231 | when extracted.
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232 | </para>
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233 |
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234 | </sect2>
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235 |
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236 | <sect2 role="content">
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237 | <title>Contents</title>
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238 |
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239 | <segmentedlist>
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240 | <segtitle>Installed Programs</segtitle>
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241 | <segtitle>Installed Libraries</segtitle>
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242 | <segtitle>Installed Directories</segtitle>
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243 |
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244 | <seglistitem>
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245 | <seg>funzip, unzip, unzipfsx, zipgrep, and zipinfo</seg>
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246 | <seg>None</seg>
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247 | <seg>None</seg>
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248 | </seglistitem>
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249 | </segmentedlist>
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250 |
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251 | <variablelist>
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252 | <bridgehead renderas="sect3">Short Descriptions</bridgehead>
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253 | <?dbfo list-presentation="list"?>
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254 | <?dbhtml list-presentation="table"?>
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255 |
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256 | <varlistentry id="funzip">
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257 | <term><command>funzip</command></term>
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258 | <listitem>
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259 | <para>
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260 | allows the output of <command>unzip</command> commands to be
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261 | redirected
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262 | </para>
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263 | <indexterm zone="unzip funzip">
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264 | <primary sortas="b-funzip">funzip</primary>
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265 | </indexterm>
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266 | </listitem>
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267 | </varlistentry>
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268 |
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269 | <varlistentry id="unzip-prog">
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270 | <term><command>unzip</command></term>
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271 | <listitem>
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272 | <para>
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273 | lists, tests or extracts files from a <filename>ZIP</filename>
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274 | archive
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275 | </para>
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276 | <indexterm zone="unzip unzip-prog">
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277 | <primary sortas="b-unzip">unzip</primary>
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278 | </indexterm>
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279 | </listitem>
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280 | </varlistentry>
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281 |
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282 | <varlistentry id="unzipfsx">
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283 | <term><command>unzipfsx</command></term>
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284 | <listitem>
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285 | <para>
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286 | is a self-extracting stub that can be prepended to a
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287 | <filename>ZIP</filename> archive. Files in this format allow the
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288 | recipient to decompress the archive without installing
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289 | <application>UnZip</application>
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290 | </para>
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291 | <indexterm zone="unzip unzipfsx">
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292 | <primary sortas="b-unzipfsx">unzipfsx</primary>
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293 | </indexterm>
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294 | </listitem>
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295 | </varlistentry>
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296 |
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297 | <varlistentry id="zipgrep">
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298 | <term><command>zipgrep</command></term>
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299 | <listitem>
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300 | <para>
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301 | searches files in a <filename>ZIP</filename> archive for
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302 | lines matching a pattern
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303 | </para>
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304 | <indexterm zone="unzip zipgrep">
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305 | <primary sortas="b-zipgrep">zipgrep</primary>
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306 | </indexterm>
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307 | </listitem>
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308 | </varlistentry>
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309 |
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310 | <varlistentry id="zipinfo">
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311 | <term><command>zipinfo</command></term>
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312 | <listitem>
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313 | <para>
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314 | produces technical information about the files in a
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315 | <filename>ZIP</filename> archive, including file access permissions,
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316 | encryption status, type of compression, etc
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317 | </para>
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318 | <indexterm zone="unzip zipinfo">
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319 | <primary sortas="b-zipinfo">zipinfo</primary>
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320 | </indexterm>
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321 | </listitem>
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322 | </varlistentry>
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323 | <!--
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324 | <varlistentry id="libunzip">
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325 | <term><filename class='libraryfile'>libunzip.so</filename></term>
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326 | <listitem>
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327 | <para>
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328 | contains the API functions required by the
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329 | <application>UnZip</application> programs.
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330 | </para>
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331 | <indexterm zone="unzip libunzip">
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332 | <primary sortas="c-libunzip">libunzip.so</primary>
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333 | </indexterm>
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334 | </listitem>
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335 | </varlistentry>
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336 | -->
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337 | </variablelist>
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338 |
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339 | </sect2>
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340 |
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341 | </sect1>
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