mirror of
https://github.com/Zeckmathederg/glfs.git
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a8d3d55a5a
git-svn-id: svn://svn.linuxfromscratch.org/BLFS/trunk/BOOK@8614 af4574ff-66df-0310-9fd7-8a98e5e911e0
301 lines
12 KiB
XML
301 lines
12 KiB
XML
<?xml version="1.0" encoding="ISO-8859-1"?>
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<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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"http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
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<!ENTITY % general-entities SYSTEM "../../general.ent">
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%general-entities;
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<!ENTITY unzip-download-http "&sourceforge-repo;/infozip/unzip60.tar.gz">
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<!-- <!ENTITY unzip-download-http "http://www.mirrorservice.org/sites/ftp.info-zip.org/pub/infozip/src/unzip552.tar.gz">
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<!ENTITY unzip-download-ftp "ftp://ftp.info-zip.org/pub/infozip/src/unzip552.tar.gz">
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<!ENTITY unzip-download-ftp "ftp://tug.ctan.org/tex-archive/tools/zip/info-zip/src/unzip552.tar.gz"> -->
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<!ENTITY unzip-download-ftp " ">
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<!ENTITY unzip-md5sum "62b490407489521db863b523a7f86375">
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<!ENTITY unzip-size "1.3 MB">
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<!ENTITY unzip-buildsize "9 MB">
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<!ENTITY unzip-time "Less than 0.1 SBU">
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]>
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<sect1 id="unzip" xreflabel="UnZip-&unzip-version;">
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<?dbhtml filename="unzip.html"?>
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<sect1info>
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<othername>$LastChangedBy$</othername>
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<date>$Date$</date>
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</sect1info>
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<title>UnZip-&unzip-version;</title>
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<indexterm zone="unzip">
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<primary sortas="a-UnZip">UnZip</primary>
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</indexterm>
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<sect2 role="package">
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<title>Introduction to UnZip</title>
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<para>The <application>UnZip</application> package contains
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<filename>ZIP</filename> extraction utilities. These are useful for
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extracting files from <filename>ZIP</filename> archives.
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<filename>ZIP</filename> archives are created with
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<application>PKZIP</application> or <application>Info-ZIP</application>
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utilities, primarily in a DOS environment.</para>
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<caution>
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<para>The previous version of the <application>UnZip</application>
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package had some locale related issues. Currently there are no BLFS
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editors capable of testing these local issues. Therefore, the
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locale related information is left on this page, but has not been
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tested. Note that the patch recommended for the locale issues will not
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apply to this version of <application>UnZip</application>. See the
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discussion below in <xref linkend="unzip-locale-issues"/>. A more
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general discussion of these problems can be found in the
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<xref linkend="locale-assumed-encoding"/> section of the
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<xref linkend="locale-issues"/> page.</para>
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</caution>
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&lfs67_checked;
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<bridgehead renderas="sect3">Package Information</bridgehead>
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<itemizedlist spacing="compact">
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<listitem>
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<para>Download (HTTP): <ulink url="&unzip-download-http;"/></para>
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</listitem>
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<listitem>
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<para>Download (FTP): <ulink url="&unzip-download-ftp;"/></para>
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</listitem>
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<listitem>
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<para>Download MD5 sum: &unzip-md5sum;</para>
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</listitem>
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<listitem>
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<para>Download size: &unzip-size;</para>
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</listitem>
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<listitem>
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<para>Estimated disk space required: &unzip-buildsize;</para>
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</listitem>
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<listitem>
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<para>Estimated build time: &unzip-time;</para>
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</listitem>
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</itemizedlist>
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<bridgehead renderas="sect3">Additional Downloads</bridgehead>
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<itemizedlist spacing='compact'>
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<!-- <listitem>
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<para>Required patch: <ulink
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url="&patch-root;/unzip-&unzip-version;-security_fix-1.patch"/></para>
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</listitem>
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<listitem>
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<para>Required patch: <ulink
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url="&patch-root;/unzip-&unzip-version;-security_fix-2.patch"/></para>
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</listitem> -->
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<listitem>
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<para>Optional patch (will not apply properly): <ulink
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url="&patch-root;/unzip-5.50-alt-iconv-v1.1.patch"/></para>
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</listitem>
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</itemizedlist>
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<para condition="html" role="usernotes">User Notes:
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<ulink url="&blfs-wiki;/unzip"/></para>
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</sect2>
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<sect2 id="unzip-locale-issues">
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<title>UnZip Locale Issues</title>
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<note>
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<para>Use of <application>UnZip</application> in the
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<application>JDK</application>, <application>Mozilla</application>,
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<application>DocBook</application> or any other BLFS package
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installation is not a problem, as BLFS instructions never use
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<application>UnZip</application> to extract a file with non-ASCII
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characters in the file's name.</para>
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</note>
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<para>The <application>UnZip</application> package assumes that filenames
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stored in the ZIP archives created on non-Unix systems are encoded in
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CP850, and that they should be converted to ISO-8859-1 when writing files
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onto the filesystem. Such assumptions are not always valid. In fact,
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inside the ZIP archive, filenames are encoded in the DOS codepage that is
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in use in the relevant country, and the filenames on disk should be in
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the locale encoding. In MS Windows, the OemToChar() C function (from
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<filename>User32.DLL</filename>) does the correct conversion (which is
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indeed the conversion from CP850 to a superset of ISO-8859-1 if MS
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Windows is set up to use the US English language), but there is no
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equivalent in Linux.</para>
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<para>When using <command>unzip</command> to unpack a ZIP archive
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containing non-ASCII filenames, the filenames are damaged because
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<command>unzip</command> uses improper conversion when any of its
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encoding assumptions are incorrect. For example, in the ru_RU.KOI8-R
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locale, conversion of filenames from CP866 to KOI8-R is required, but
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conversion from CP850 to ISO-8859-1 is done, which produces filenames
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consisting of undecipherable characters instead of words (the closest
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equivalent understandable example for English-only users is rot13). There
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are several ways around this limitation:</para>
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<para>1) For unpacking ZIP archives with filenames containing non-ASCII
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characters, use <ulink url="http://www.winzip.com/">WinZip</ulink> while
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running the <ulink url="http://www.winehq.com/">Wine</ulink> Windows
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emulator.</para>
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<para>2) After running <command>unzip</command>, fix the damage made to
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the filenames using the <command>convmv</command> tool
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(<ulink url="http://j3e.de/linux/convmv/"/>). The following is an example
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for the ru_RU.KOI8-R locale:</para>
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<blockquote>
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<para>Step 1. Undo the conversion done by
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<command>unzip</command>:</para>
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<screen><userinput>convmv -f iso-8859-1 -t cp850 -r --nosmart --notest \
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<replaceable></path/to/unzipped/files></replaceable></userinput></screen>
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<para>Step 2. Do the correct conversion instead:</para>
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<screen><userinput>convmv -f cp866 -t koi8-r -r --nosmart --notest \
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<replaceable></path/to/unzipped/files></replaceable></userinput></screen>
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</blockquote>
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<para>3) Apply the optional
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<filename>unzip-5.50-alt-iconv-v1.1.patch</filename> patch to
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<application>UnZip</application>. It will apply with some offsets.</para>
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<para>It allows to specify the assumed filename encoding in the ZIP
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archive using the <option>-O charset_name</option> option and the
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on-disk filename encoding using the <option>-I charset_name</option>
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option. Defaults: the on-disk filename encoding is the locale encoding,
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the encoding inside the ZIP archive is guessed according to the builtin
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table based on the locale encoding. For US English users, this still
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means that unzip converts from CP850 to ISO-8859-1 by default.</para>
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<para>Caveat: this method works only with 8-bit locale encodings, not
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with UTF-8. Attempting to use a patched <command>unzip</command> in UTF-8
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locales may result in a segmentation fault and is probably a security
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risk.</para>
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</sect2>
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<sect2 role="installation">
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<title>Installation of UnZip</title>
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<!-- <para>Note that if you applied the patch described above for locale issues,
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the first required security patch will have some offsets. Now install
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<application>UnZip</application> by running the following commands:</para> -->
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<screen><userinput>make -f unix/Makefile linux</userinput></screen>
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<para>To test the results, issue: <command>make check</command>.</para>
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<para>Now, as the <systemitem class="username">root</systemitem> user:</para>
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<screen role="root"><userinput>make prefix=/usr install</userinput></screen>
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</sect2>
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<sect2 role="commands">
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<title>Command Explanations</title>
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<para><parameter>linux</parameter>:
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This target in the <filename>Makefile</filename> makes assumptions
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that are useful for a Linux system when compiling the executables.
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To obtain alternatives to this target, use <command>make list</command></para>
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<!-- <para><parameter>LOCAL_UNZIP=...</parameter>:
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This sets the compilation flags to allow <application>UnZip</application>
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to handle files up to 4 GB.</para> -->
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</sect2>
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<sect2 role="content">
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<title>Contents</title>
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<segmentedlist>
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<segtitle>Installed Programs</segtitle>
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<segtitle>Installed Libraries</segtitle>
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<segtitle>Installed Directories</segtitle>
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<seglistitem>
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<seg>funzip, unzip, unzipfsx, zipgrep, and zipinfo</seg>
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<seg>None</seg>
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<seg>None</seg>
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</seglistitem>
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</segmentedlist>
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<variablelist>
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<bridgehead renderas="sect3">Short Descriptions</bridgehead>
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<?dbfo list-presentation="list"?>
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<?dbhtml list-presentation="table"?>
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<varlistentry id="funzip">
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<term><command>funzip</command></term>
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<listitem>
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<para>allows the output of <command>unzip</command> commands to be
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redirected.</para>
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<indexterm zone="unzip funzip">
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<primary sortas="b-funzip">funzip</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="unzip-prog">
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<term><command>unzip</command></term>
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<listitem>
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<para>lists, tests or extracts files from a <filename>ZIP</filename>
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archive.</para>
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<indexterm zone="unzip unzip-prog">
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<primary sortas="b-unzip">unzip</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="unzipfsx">
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<term><command>unzipfsx</command></term>
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<listitem>
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<para>is a self-extracting stub that can be prepended to a
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<filename>ZIP</filename> archive. Files in this format allow the
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recipient to decompress the archive without installing
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<application>UnZip</application>.</para>
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<indexterm zone="unzip unzipfsx">
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<primary sortas="b-unzipfsx">unzipfsx</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="zipgrep">
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<term><command>zipgrep</command></term>
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<listitem>
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<para>searches files in a <filename>ZIP</filename> archive for
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lines matching a pattern.</para>
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<indexterm zone="unzip zipgrep">
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<primary sortas="b-zipgrep">zipgrep</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="zipinfo">
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<term><command>zipinfo</command></term>
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<listitem>
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<para>produces technical information about the files in a
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<filename>ZIP</filename> archive, including file access permissions,
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encryption status, type of compression, etc.</para>
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<indexterm zone="unzip zipinfo">
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<primary sortas="b-zipinfo">zipinfo</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="libunzip">
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<term><filename class='libraryfile'>libunzip.so</filename></term>
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<listitem>
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<para>contains the API functions required by the
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<application>UnZip</application> programs.</para>
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<indexterm zone="unzip libunzip">
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<primary sortas="c-libunzip">libunzip.so</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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</variablelist>
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</sect2>
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</sect1>
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