2010-07-08 22:03:41 +04:00
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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml" lang="en-US" xml:lang="en-US">
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<head>
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<!--
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*
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* Copyright 2008-2009, Haiku. All rights reserved.
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* Distributed under the terms of the MIT License.
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*
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* Authors:
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* Humdinger <humdingerb@gmail.com>
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2010-08-02 20:51:09 +04:00
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* Translators:
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* Pengphei Han
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2010-07-08 22:03:41 +04:00
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*
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-->
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<title>索引</title>
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<div id="banner">
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2010-08-02 20:51:09 +04:00
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<div><span>用户指南</span></div>
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2010-07-08 22:03:41 +04:00
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2011-05-22 22:01:43 +04:00
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2010-07-08 22:03:41 +04:00
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2011-12-04 00:12:53 +04:00
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2012-11-16 01:36:54 +04:00
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2014-05-31 02:02:36 +04:00
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2010-07-08 22:03:41 +04:00
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<span>
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« <a href="attributes.html">Attributes（属性）</a>
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2010-08-02 20:51:09 +04:00
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:: <a href="contents.html" class="uplink">内容</a>
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:: <a href="queries.html">查询</a> »
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2010-07-08 22:03:41 +04:00
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</span></div>
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<div id="content">
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<div>
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<h1>索引</h1>
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2010-08-02 20:51:09 +04:00
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<p><a href="attributes.html">属性</a>和<a href="queries.html">查询</a>是Haiku的主要特性。由于属性只能独立的用于显示文件的附加信息，而对于查询，则需要建立索引。索引把属性放置在一个查询表中，而这也将会使查询更加轻量化和快速。<br />
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索引是文件系统的一部分，而且它独立于特定的磁卷和分区。</p>
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2010-08-02 20:51:09 +04:00
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<h2>终端中的索引命令</h2>
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<p>有几个命令可以用于管理索引：</p>
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<ul>
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<li><b>lsindex</b> - 显示当前磁卷或者分区中的索引属性。<br />
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下面是默认索引的属性：</li>
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</ul>
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<pre class="terminal"> ~ ->lsindex
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BEOS:APP_SIG
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MAIL:account
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MAIL:cc
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MAIL:chain
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MAIL:draft
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MAIL:flags
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MAIL:from
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MAIL:name
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MAIL:pending_chain
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MAIL:priority
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MAIL:reply
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MAIL:status
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MAIL:subject
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MAIL:thread
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MAIL:to
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MAIL:when
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META:address
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META:city
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META:company
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META:country
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META:email
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META:fax
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META:group
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META:hphone
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META:name
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META:nickname
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META:state
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META:url
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META:wphone
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META:zip
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_signature
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_status
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_trk/qrylastchange
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_trk/recentQuery
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be:deskbar_item_status
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last_modified
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name
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size
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</pre>
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<ul>
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<li><b>mkindex</b> - 为磁卷或者分区的索引添加属性。 </li>
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</ul>
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<pre>Usage: mkindex [options] <attribute>
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Creates a new index for the specified attribute.
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-d, --volume=PATH a path on the volume to which the index will be added,
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defaults to current volume.
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-t, --type=TYPE the type of the attribute being indexed. One of "int",
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"llong", "string", "float", or "double".
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Defaults to "string".
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--copy-from path to volume to copy the indexes from.
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-v, --verbose print information about the index being created
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</pre>
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<p>只有具有该属性的 <b>新建</b> 文件才可以自动添加到该索引中！
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<br />
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现存的文件必须通过手动的复制该文件，然后删除原件才可以添加到索引中。当然，您也可以使用 <span class="cli">reindex</span> 命令。
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</p>
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<ul>
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<li><b>reindex</b> - 把已存在文件的属性添加到新建的磁卷或者分区的索引中。</li>
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</ul>
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<pre>Usage: reindex [-rvf] attr <list of filenames and/or directories>
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-r enter directories recursively
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-v verbose output
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-f create/update all indices from the source volume,
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"attr" is the path to the source volume
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</pre>
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<ul>
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<li><b>rmindex</b> - 从磁卷或者分区的索引中删除属性。</li>
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</ul>
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<pre>Usage: rmindex [OPTION]... INDEX_NAME
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Removes the index named INDEX_NAME from a disk volume. Once this has been
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done, it will no longer be possible to use the query system to search for
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files with the INDEX_NAME attribute.
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-d, --volume=PATH a path on the volume from which the index will be
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removed
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-h, --help display this help and exit
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-p, --pattern INDEX_NAME is a pattern
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-v, --verbose print information about the index being removed
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INDEX_NAME is the name of a file attribute.
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If no volume is specified, the volume of the current directory is assumed.</pre>
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</div>
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<div class="nav">
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<div class="inner"><span>
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« <a href="attributes.html">Attributes（属性）</a>
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2010-08-02 20:51:09 +04:00
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:: <a href="contents.html" class="uplink">内容</a>
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:: <a href="queries.html">查询</a> »
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2010-07-08 22:03:41 +04:00
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</span></div>
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