转：Nutch-2.2.1脚本分析

朴灿烈づ我的快乐病毒、 2022-08-08 19:50 127阅读 0赞

为了对Nutch进行定制化，需要看懂Nutch的源码。

版本：2.2.1   最新版本

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      <code>我们知道执行nutch时，会敲入</code> 
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      <code>.</code> 
      <code>/bin/nutch</code> 
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      <code>通过查看nutch的内容，我们知道这是一个shell脚本</code> 
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      <code>cat nutch|wc -l</code> 
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      <code>244</code> 
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      <code>root</code> 
      <code>@idc200</code> 
      <code>:/usr/local/nutch-</code> 
      <code>2.2</code> 
      <code>.</code> 
      <code>1</code> 
      <code>/runtime/local/bin#</code> 
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先来分析一下这244行脚本

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      <code>#!/bin/bash</code> 
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      <code>#</code> 
     </div> 
     <div> 
      <code># Licensed to the Apache Software Foundation (ASF) under one or more</code> 
     </div> 
     <div> 
      <code># contributor license agreements.&nbsp; See the NOTICE file distributed with</code> 
     </div> 
     <div> 
      <code># this work for additional information regarding copyright ownership.</code> 
     </div> 
     <div> 
      <code># The ASF licenses this file to You under the Apache License, Version 2.0</code> 
     </div> 
     <div> 
      <code># (the "License"); you may not use this file except in compliance with</code> 
     </div> 
     <div> 
      <code># the License.&nbsp; You may obtain a copy of the License at</code> 
     </div> 
     <div> 
      <code>#</code> 
     </div> 
     <div> 
      <code>#&nbsp;&nbsp;&nbsp;&nbsp; http://www.apache.org/licenses/LICENSE-2.0</code> 
     </div> 
     <div> 
      <code>#</code> 
     </div> 
     <div> 
      <code># Unless required by applicable law or agreed to in writing, software</code> 
     </div> 
     <div> 
      <code># distributed under the License is distributed on an "AS IS" BASIS,</code> 
     </div> 
     <div> 
      <code># WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</code> 
     </div> 
     <div> 
      <code># See the License for the specific language governing permissions and</code> 
     </div> 
     <div> 
      <code># limitations under the License.</code> 
     </div> 
     <div> 
      <code>#</code> 
     </div> 
     <div> 
      <code># The Nutch command script</code> 
     </div> 
     <div> 
      <code>#</code> 
     </div> 
     <div> 
      <code># Environment Variables</code> 
     </div> 
     <div> 
      <code>#</code> 
     </div> 
     <div> 
      <code>#&nbsp;&nbsp; NUTCH_JAVA_HOME The java implementation to use.&nbsp; Overrides JAVA_HOME.</code> 
     </div> 
     <div> 
      <code>#</code> 
     </div> 
     <div> 
      <code>#&nbsp;&nbsp; NUTCH_HEAPSIZE&nbsp; The maximum amount of heap to use, in MB.</code> 
     </div> 
     <div> 
      <code>#&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Default is 1000.</code> 
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      <code>#</code> 
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      <code>#&nbsp;&nbsp; NUTCH_OPTS&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Extra Java runtime options.</code> 
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      <code>#</code> 
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上面是1-28行的注释，不解释。

~~~~~~~~~~~~~~~~~~~~~~~~~~~

接下来是 29-33行

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      <code>cygwin=false</code> 
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      <code>case </code> 
      <code>"`uname`"</code> 
      <code>in</code> 
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      <code>CYGWIN*) cygwin=true;;</code> 
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      <code>esac</code> 
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通过输入

if $cygwin; then  
        echo "cygwin is true"  
else  
        echo "cygwin is false"  
fi

可知cygwin为false,这是因为我直接在linux环境下运行，而不是window下运行。

~~~~~~~~~~~~~~~~~~~~~~~~~~~

接下来是34-45行

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      <code># resolve links - $0 may be a softlink</code> 
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      <code>THIS=</code> 
      <code>"$0"</code> 
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      <code>while</code> 
      <code> [ -h </code> 
      <code>"$THIS"</code> 
      <code>]; </code> 
      <code>do</code> 
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      <code>&nbsp;&nbsp;</code> 
      <code>ls</code> 
      <code>=`</code> 
      <code>ls</code> 
      <code>-ld </code> 
      <code>"$THIS"</code> 
      <code>`</code> 
     </div> 
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      <code>&nbsp;&nbsp;</code> 
      <code>link=`</code> 
      <code>expr</code> 
      <code>"$ls"</code> 
      <code>: </code> 
      <code>'.*-&gt; $.*$$'</code> 
      <code>`</code> 
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      <code>&nbsp;&nbsp;</code> 
      <code>if</code> 
      <code>expr</code> 
      <code>"$link"</code> 
      <code>: </code> 
      <code>'.*/.*'</code> 
      <code> &gt; </code> 
      <code>/dev/null</code> 
      <code>; </code> 
      <code>then</code> 
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      <code>&nbsp;&nbsp;&nbsp;&nbsp;</code> 
      <code>THIS=</code> 
      <code>"$link"</code> 
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      <code>&nbsp;&nbsp;</code> 
      <code>else</code> 
     </div> 
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      <code>&nbsp;&nbsp;&nbsp;&nbsp;</code> 
      <code>THIS=`</code> 
      <code>dirname</code> 
      <code>"$THIS"</code> 
      <code>`/</code> 
      <code>"$link"</code> 
     </div> 
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      <code>&nbsp;&nbsp;</code> 
      <code>fi</code> 
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      <code>done</code> 
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这段话是什么意思呢？

THIS是第一个参数的值，比如说正常情况下就是"./bin/nutch".

\[ -h "$THIS" \]的意思是什么呢？

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      <code>-h FILE</code> 
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      <code>FILE exists and is a symbolic link (same as -L)</code> 
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       &nbsp; 
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      <code>-h 用来判断$PRG文件是否存在并且是一个符号链接</code> 
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      <code>脚本就是当$PRG存在并且是符号链接时执行</code> 
      <code>do</code> 
      <code>~</code> 
      <code>done</code> 
      <code>之间的脚本</code> 
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我的不是符号链接，则不用理会这个。

~~~~~~~~~~~~

接下来的是46-73行。

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      <code># if no args specified, show usage</code> 
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      <code>if</code> 
      <code> [ $</code> 
      <code># = 0 ]; then</code> 
     </div> 
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      <code>&nbsp;&nbsp;</code> 
      <code>echo</code> 
      <code>"Usage: nutch COMMAND"</code> 
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      <code>&nbsp;&nbsp;</code> 
      <code>echo</code> 
      <code>"where COMMAND is one of:"</code> 
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      <code># echo " crawl one-step crawler for intranets"</code> 
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      <code>&nbsp;&nbsp;</code> 
      <code>echo</code> 
      <code>" inject&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; inject new urls into the database"</code> 
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      <code>&nbsp;&nbsp;</code> 
      <code>echo</code> 
      <code>" hostinject&nbsp;&nbsp;&nbsp;&nbsp; creates or updates an existing host table from a text file"</code> 
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     <div> 
      <code>&nbsp;&nbsp;</code> 
      <code>echo</code> 
      <code>" generate&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; generate new batches to fetch from crawl db"</code> 
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      <code>&nbsp;&nbsp;</code> 
      <code>echo</code> 
      <code>" fetch&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; fetch URLs marked during generate"</code> 
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      <code>&nbsp;&nbsp;</code> 
      <code>echo</code> 
      <code>" parse&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; parse URLs marked during fetch"</code> 
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      <code>&nbsp;&nbsp;</code> 
      <code>echo</code> 
      <code>" updatedb&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; update web table after parsing"</code> 
     </div> 
     <div> 
      <code>&nbsp;&nbsp;</code> 
      <code>echo</code> 
      <code>" updatehostdb&nbsp;&nbsp; update host table after parsing"</code> 
     </div> 
     <div> 
      <code>&nbsp;&nbsp;</code> 
      <code>echo</code> 
      <code>" readdb&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; read/dump records from page database"</code> 
     </div> 
     <div> 
      <code>&nbsp;&nbsp;</code> 
      <code>echo</code> 
      <code>" readhostdb&nbsp;&nbsp;&nbsp;&nbsp; display entries from the hostDB"</code> 
     </div> 
     <div> 
      <code>&nbsp;&nbsp;</code> 
      <code>echo</code> 
      <code>" elasticindex&nbsp;&nbsp; run the elasticsearch indexer"</code> 
     </div> 
     <div> 
      <code>&nbsp;&nbsp;</code> 
      <code>echo</code> 
      <code>" solrindex&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; run the solr indexer on parsed batches"</code> 
     </div> 
     <div> 
      <code>&nbsp;&nbsp;</code> 
      <code>echo</code> 
      <code>" solrdedup&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; remove duplicates from solr"</code> 
     </div> 
     <div> 
      <code>&nbsp;&nbsp;</code> 
      <code>echo</code> 
      <code>" parsechecker&nbsp;&nbsp; check the parser for a given url"</code> 
     </div> 
     <div> 
      <code>&nbsp;&nbsp;</code> 
      <code>echo</code> 
      <code>" indexchecker&nbsp;&nbsp; check the indexing filters for a given url"</code> 
     </div> 
     <div> 
      <code>&nbsp;&nbsp;</code> 
      <code>echo</code> 
      <code>" plugin&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; load a plugin and run one of its classes main()"</code> 
     </div> 
     <div> 
      <code>&nbsp;&nbsp;</code> 
      <code>echo</code> 
      <code>" nutchserver&nbsp;&nbsp;&nbsp; run a (local) Nutch server on a user defined port"</code> 
     </div> 
     <div> 
      <code>&nbsp;&nbsp;</code> 
      <code>echo</code> 
      <code>" junit&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; runs the given JUnit test"</code> 
     </div> 
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      <code>&nbsp;&nbsp;</code> 
      <code>echo</code> 
      <code>" or"</code> 
     </div> 
     <div> 
      <code>&nbsp;&nbsp;</code> 
      <code>echo</code> 
      <code>" CLASSNAME&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; run the class named CLASSNAME"</code> 
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这个就很简单了，如果没有第2个参数，则打印用法。

~~~~~~~~~~~~~~~~~~

接下来是74-77行

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      <code># get arguments</code> 
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     <div> 
      <code>COMMAND=$</code> 
      <code>1</code> 
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      <code>shift</code> 
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这个是什么意思呢？

先将参数1传给COMMAND.然后左移动一位，将参数2变成参数1，参数3变成参数2.

注意：参数0保持不变。

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

接下来是78-81行

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      <code># some directories</code> 
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      <code>THIS_DIR=`</code> 
      <code>dirname</code> 
      <code>"$THIS"</code> 
      <code>`</code> 
     </div> 
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      <code>NUTCH_HOME=`</code> 
      <code>cd</code> 
      <code>"$THIS_DIR/.."</code> 
      <code>; </code> 
      <code>pwd</code> 
      <code>`</code> 
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这个比较简单，我的环境下的输出结果是：

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      <code>.</code> 
      <code>/bin</code> 
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      <code>/usr/local/nutch-2</code> 
      <code>.2.1</code> 
      <code>/runtime/local</code> 
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~~~~~~~~~~~~~~~~~~~~

接下来是82-93行

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      <code># some Java parameters</code> 
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      <code>if</code> 
      <code> [ </code> 
      <code>"$NUTCH_JAVA_HOME"</code> 
      <code> != </code> 
      <code>""</code> 
      <code>]; </code> 
      <code>then</code> 
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      <code>&nbsp;&nbsp;</code> 
      <code>#echo "run java in $NUTCH_JAVA_HOME"</code> 
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      <code>&nbsp;&nbsp;</code> 
      <code>JAVA_HOME=$NUTCH_JAVA_HOME</code> 
     </div> 
     <div> 
      <code>fi</code> 
     </div> 
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       &nbsp; 
     </div> 
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      <code>if</code> 
      <code> [ </code> 
      <code>"$JAVA_HOME"</code> 
      <code> = </code> 
      <code>""</code> 
      <code>]; </code> 
      <code>then</code> 
     </div> 
     <div> 
      <code>&nbsp;&nbsp;</code> 
      <code>echo</code> 
      <code>"Error: JAVA_HOME is not set."</code> 
     </div> 
     <div> 
      <code>&nbsp;&nbsp;</code> 
      <code>exit</code> 
      <code>1</code> 
     </div> 
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      <code>fi</code> 
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测试看NUTCH\_JAVA\_HOME是否为空，我的linux环境里没有配置这个环境变量。

所以NUTCH\_JAVA\_HOME仍然保持为空。

下面的是测试JAVA\_HOME是否设置，否则报错退出。这个没有啥问题。

~~~~~~~~~~~~~~~~~~~~~~

接下来的是94-103行

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      <code># NUTCH_JOB </code> 
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      <code>if</code> 
      <code> [ -f ${NUTCH_HOME}/*nutch*.job ]; </code> 
      <code>then</code> 
     </div> 
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      <code>&nbsp;&nbsp;&nbsp;&nbsp;</code> 
      <code>local</code> 
      <code>=</code> 
      <code>false</code> 
     </div> 
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      <code>&nbsp;&nbsp;</code> 
      <code>for</code> 
      <code>f </code> 
      <code>in</code> 
      <code> $NUTCH_HOME/*nutch*.job; </code> 
      <code>do</code> 
     </div> 
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      <code>&nbsp;&nbsp;&nbsp;&nbsp;</code> 
      <code>NUTCH_JOB=$f;</code> 
     </div> 
     <div> 
      <code>&nbsp;&nbsp;</code> 
      <code>done</code> 
     </div> 
     <div> 
      <code>else</code> 
     </div> 
     <div> 
      <code>&nbsp;&nbsp;</code> 
      <code>local</code> 
      <code>=</code> 
      <code>true</code> 
     </div> 
     <div> 
      <code>fi</code> 
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来分析下这段脚本的含义

其实是通过判断文件是否存在来判断运行在deploy模式下还是local模式下。

我当前使用了local文件夹的文件，所以local为true.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

接下来是104-108行

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      <code># cygwin path translation</code> 
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      <code>if</code> 
      <code> $cygwin; then</code> 
     </div> 
     <div> 
      <code>&nbsp;&nbsp;</code> 
      <code>NUTCH_JOB=`cygpath -p -w </code> 
      <code>"$NUTCH_JOB"</code> 
      <code>`</code> 
     </div> 
     <div> 
      <code>fi</code> 
     </div> 
    </div> </td> 
  </tr> 
 </tbody> 
</table>

这个不用理会。

~~~~~~~~~~~~~~~~··

接下来是109-111行

[?][Link 1]

我的环境的输出结果为：

[?][Link 1]

~~~~~~~~

接下来是112-118行

[?][Link 1]

<table> 
 <tbody> 
  <tr> 
   <td> 
    <div>
      1 
    </div> 
    <div>
      2 
    </div> 
    <div>
      3 
    </div> 
    <div>
      4 
    </div> 
    <div>
      5 
    </div> 
    <div>
      6 
    </div> </td> 
   <td> 
    <div> 
     <div> 
      <code># check envvars which might override default args</code> 
     </div> 
     <div> 
      <code>if</code> 
      <code> [ </code> 
      <code>"$NUTCH_HEAPSIZE"</code> 
      <code> != </code> 
      <code>""</code> 
      <code>]; </code> 
      <code>then</code> 
     </div> 
     <div> 
      <code>&nbsp;&nbsp;</code> 
      <code>#echo "run with heapsize $NUTCH_HEAPSIZE"</code> 
     </div> 
     <div> 
      <code>&nbsp;&nbsp;</code> 
      <code>JAVA_HEAP_MAX=</code> 
      <code>"-Xmx"</code> 
      <code>"$NUTCH_HEAPSIZE"</code> 
      <code>"m"</code> 
     </div> 
     <div> 
      <code>&nbsp;&nbsp;</code> 
      <code>#echo $JAVA_HEAP_MAX</code> 
     </div> 
     <div> 
      <code>fi</code> 
     </div> 
    </div> </td> 
  </tr> 
 </tbody> 
</table>

我的环境的NUTCH\_HEAPSIZE没有设置，所以这个也不用理会。

~~~~~~~~

接下来119-125行

[?][Link 1]

<table> 
 <tbody> 
  <tr> 
   <td> 
    <div>
      1 
    </div> 
    <div>
      2 
    </div> 
    <div>
      3 
    </div> 
    <div>
      4 
    </div> 
    <div>
      5 
    </div> 
    <div>
      6 
    </div> </td> 
   <td> 
    <div> 
     <div> 
      <code># CLASSPATH initially contains $NUTCH_CONF_DIR, or defaults to $NUTCH_HOME/conf</code> 
     </div> 
     <div> 
      <code>CLASSPATH=${NUTCH_CONF_DIR:=$NUTCH_HOME</code> 
      <code>/conf</code> 
      <code>}</code> 
     </div> 
     <div> 
      <code>CLASSPATH=${CLASSPATH}:$JAVA_HOME</code> 
      <code>/lib/tools</code> 
      <code>.jar</code> 
     </div> 
     <div>
       &nbsp; 
     </div> 
     <div> 
      <code># so that filenames w/ spaces are handled correctly in loops below</code> 
     </div> 
     <div> 
      <code>IFS=</code> 
     </div> 
    </div> </td> 
  </tr> 
 </tbody> 
</table>

这个就很简单了

我的环境的CLASSPATH输出结果为：

/usr/local/nutch-2.2.1/runtime/local/conf:/usr/lib/jvm/jdk1.7.0\_21/lib/tools.jar

~~~~~~~~~~~

接下来是：126-142行

[?][Link 1]

其实就是不断添加jar包到CLASSPATH里

这样，输出就包含了很多的jar包。

~~~~~~~~~~~~~~~

接下来是143-164行

[?][Link 1]

<table> 
 <tbody> 
  <tr> 
   <td> 
    <div>
      1 
    </div> 
    <div>
      2 
    </div> 
    <div>
      3 
    </div> 
    <div>
      4 
    </div> 
    <div>
      5 
    </div> 
    <div>
      6 
    </div> 
    <div>
      7 
    </div> 
    <div>
      8 
    </div> 
    <div>
      9 
    </div> 
    <div>
      10 
    </div> 
    <div>
      11 
    </div> 
    <div>
      12 
    </div> 
    <div>
      13 
    </div> 
    <div>
      14 
    </div> 
    <div>
      15 
    </div> 
    <div>
      16 
    </div> 
    <div>
      17 
    </div> 
    <div>
      18 
    </div> 
    <div>
      19 
    </div> 
    <div>
      20 
    </div> 
    <div>
      21 
    </div> </td> 
   <td> 
    <div> 
     <div> 
      <code># setup 'java.library.path' for native-hadoop code if necessary</code> 
     </div> 
     <div> 
      <code># used only in local mode </code> 
     </div> 
     <div> 
      <code>JAVA_LIBRARY_PATH=</code> 
      <code>''</code> 
     </div> 
     <div> 
      <code>if</code> 
      <code> [ -d </code> 
      <code>"${NUTCH_HOME}/lib/native"</code> 
      <code> ]; </code> 
      <code>then</code> 
     </div> 
     <div> 
      <code>&nbsp;&nbsp;</code> 
      <code>JAVA_PLATFORM=`CLASSPATH=${CLASSPATH} ${JAVA} org.apache.hadoop.util.PlatformName | </code> 
      <code>sed</code> 
      <code>-e </code> 
      <code>'s/ /_/g'</code> 
      <code>`</code> 
     </div> 
     <div>
       &nbsp; 
     </div> 
     <div> 
      <code>&nbsp;&nbsp;</code> 
      <code>if</code> 
      <code>[ -d </code> 
      <code>"${NUTCH_HOME}/lib/native"</code> 
      <code>]; </code> 
      <code>then</code> 
     </div> 
     <div> 
      <code>&nbsp;&nbsp;&nbsp;&nbsp;</code> 
      <code>if</code> 
      <code>[ </code> 
      <code>"x$JAVA_LIBRARY_PATH"</code> 
      <code>!= </code> 
      <code>"x"</code> 
      <code> ]; </code> 
      <code>then</code> 
     </div> 
     <div> 
      <code>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</code> 
      <code>JAVA_LIBRARY_PATH=${JAVA_LIBRARY_PATH}:${NUTCH_HOME}</code> 
      <code>/lib/native/</code> 
      <code>${JAVA_PLATFORM}</code> 
     </div> 
     <div> 
      <code>&nbsp;&nbsp;&nbsp;&nbsp;</code> 
      <code>else</code> 
     </div> 
     <div> 
      <code>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</code> 
      <code>JAVA_LIBRARY_PATH=${NUTCH_HOME}</code> 
      <code>/lib/native/</code> 
      <code>${JAVA_PLATFORM}</code> 
     </div> 
     <div> 
      <code>&nbsp;&nbsp;&nbsp;&nbsp;</code> 
      <code>fi</code> 
     </div> 
     <div> 
      <code>&nbsp;&nbsp;</code> 
      <code>fi</code> 
     </div> 
     <div> 
      <code>fi</code> 
     </div> 
     <div>
       &nbsp; 
     </div> 
     <div> 
      <code>if</code> 
      <code> [ $cygwin = </code> 
      <code>true</code> 
      <code> -a </code> 
      <code>"X${JAVA_LIBRARY_PATH}"</code> 
      <code> != </code> 
      <code>"X"</code> 
      <code>]; </code> 
      <code>then</code> 
     </div> 
     <div> 
      <code>&nbsp;&nbsp;</code> 
      <code>JAVA_LIBRARY_PATH=`cygpath -p -w </code> 
      <code>"$JAVA_LIBRARY_PATH"</code> 
      <code>`</code> 
     </div> 
     <div> 
      <code>fi</code> 
     </div> 
     <div>
       &nbsp; 
     </div> 
     <div> 
      <code># restore ordinary behaviour</code> 
     </div> 
     <div> 
      <code>unset</code> 
      <code>IFS</code> 
     </div> 
    </div> </td> 
  </tr> 
 </tbody> 
</table>

直接自己加代码echo出这些变量的值就可以。很简单。

~~~~~~~~~~~~~~~

165-184行

[?][Link 1]

我打印出结果如下：

[?][Link 1]

<table> 
 <tbody> 
  <tr> 
   <td> 
    <div>
      1 
    </div> 
    <div>
      2 
    </div> 
    <div>
      3 
    </div> 
    <div>
      4 
    </div> 
    <div>
      5 
    </div> 
    <div>
      6 
    </div> 
    <div>
      7 
    </div> </td> 
   <td> 
    <div> 
     <div> 
      <code>NUTCH_LOGFILE </code> 
     </div> 
     <div> 
      <code>hadoop.log</code> 
     </div> 
     <div>
       &nbsp; 
     </div> 
     <div>
       &nbsp; 
     </div> 
     <div>
       &nbsp; 
     </div> 
     <div> 
      <code>NUTCH_OPTS&nbsp; </code> 
     </div> 
     <div> 
      <code>-Dhadoop.log.dir=/usr/local/nutch-</code> 
      <code>2.2</code> 
      <code>.</code> 
      <code>1</code> 
      <code>/runtime/local/logs -Dhadoop.log.file=hadoop.log -Djava.library.path=/usr/local/nutch-</code> 
      <code>2.2</code> 
      <code>.</code> 
      <code>1</code> 
      <code>/runtime/local/lib/</code> 
      <code>native</code> 
      <code>/Linux-amd64-</code> 
      <code>64</code> 
     </div> 
    </div> </td> 
  </tr> 
 </tbody> 
</table>

~~~~~~~~~~~

185-227行

[?][Link 1]

<table> 
 <tbody> 
  <tr> 
   <td> 
    <div>
      1 
    </div> 
    <div>
      2 
    </div> 
    <div>
      3 
    </div> 
    <div>
      4 
    </div> 
    <div>
      5 
    </div> 
    <div>
      6 
    </div> 
    <div>
      7 
    </div> 
    <div>
      8 
    </div> 
    <div>
      9 
    </div> 
    <div>
      10 
    </div> 
    <div>
      11 
    </div> 
    <div>
      12 
    </div> 
    <div>
      13 
    </div> 
    <div>
      14 
    </div> 
    <div>
      15 
    </div> 
    <div>
      16 
    </div> 
    <div>
      17 
    </div> 
    <div>
      18 
    </div> 
    <div>
      19 
    </div> 
    <div>
      20 
    </div> 
    <div>
      21 
    </div> 
    <div>
      22 
    </div> 
    <div>
      23 
    </div> 
    <div>
      24 
    </div> </td> 
   <td> 
    <div> 
     <div> 
      <code># figure out which </code> 
      <code>class</code> 
      <code>to run</code> 
     </div> 
     <div> 
      <code>if</code> 
      <code> [ </code> 
      <code>"$COMMAND"</code> 
      <code>= </code> 
      <code>"crawl"</code> 
      <code>] ; then</code> 
     </div> 
     <div> 
      <code>CLASS=org.apache.nutch.crawl.Crawler</code> 
     </div> 
     <div> 
      <code>elif [ </code> 
      <code>"$COMMAND"</code> 
      <code>= </code> 
      <code>"inject"</code> 
      <code> ] ; then</code> 
     </div> 
     <div> 
      <code>CLASS=org.apache.nutch.crawl.InjectorJob</code> 
     </div> 
     <div> 
      <code>elif [ </code> 
      <code>"$COMMAND"</code> 
      <code>= </code> 
      <code>"hostinject"</code> 
      <code> ] ; then</code> 
     </div> 
     <div> 
      <code>CLASS=org.apache.nutch.host.HostInjectorJob</code> 
     </div> 
     <div> 
      <code>elif [ </code> 
      <code>"$COMMAND"</code> 
      <code>= </code> 
      <code>"generate"</code> 
      <code> ] ; then</code> 
     </div> 
     <div> 
      <code>CLASS=org.apache.nutch.crawl.GeneratorJob</code> 
     </div> 
     <div> 
      <code>elif [ </code> 
      <code>"$COMMAND"</code> 
      <code>= </code> 
      <code>"fetch"</code> 
      <code> ] ; then</code> 
     </div> 
     <div> 
      <code>CLASS=org.apache.nutch.fetcher.FetcherJob</code> 
     </div> 
     <div> 
      <code>elif [ </code> 
      <code>"$COMMAND"</code> 
      <code>= </code> 
      <code>"parse"</code> 
      <code> ] ; then</code> 
     </div> 
     <div> 
      <code>CLASS=org.apache.nutch.parse.ParserJob</code> 
     </div> 
     <div> 
      <code>elif [ </code> 
      <code>"$COMMAND"</code> 
      <code>= </code> 
      <code>"updatedb"</code> 
      <code> ] ; then</code> 
     </div> 
     <div> 
      <code>CLASS=org.apache.nutch.crawl.DbUpdaterJob</code> 
     </div> 
     <div> 
      <code>elif [ </code> 
      <code>"$COMMAND"</code> 
      <code>= </code> 
      <code>"updatehostdb"</code> 
      <code>] ; then</code> 
     </div> 
     <div> 
      <code>CLASS=org.apache.nutch.host.HostDbUpdateJob</code> 
     </div> 
     <div> 
      <code>elif [ </code> 
      <code>"$COMMAND"</code> 
      <code>= </code> 
      <code>"readdb"</code> 
      <code> ] ; then</code> 
     </div> 
     <div> 
      <code>CLASS=org.apache.nutch.crawl.WebTableReader</code> 
     </div> 
     <div> 
      <code>elif [ </code> 
      <code>"$COMMAND"</code> 
      <code>= </code> 
      <code>"readhostdb"</code> 
      <code> ] ; then</code> 
     </div> 
     <div> 
      <code>CLASS=org.apache.nutch.host.HostDbReader</code> 
     </div> 
     <div> 
      <code>elif [ </code> 
      <code>"$COMMAND"</code> 
      <code>= </code> 
      <code>"elasticindex"</code> 
      <code>] ; then</code> 
     </div> 
     <div> 
      <code>CLASS=org.apache.nutch.indexer.elastic.ElasticIndexerJob</code> 
     </div> 
     <div> 
      <code>elif [ </code> 
      <code>"$COMMAND"</code> 
      <code>= </code> 
      <code>"solrindex"</code> 
      <code> ] ; then</code> 
     </div> 
    </div> </td> 
  </tr> 
 </tbody> 
</table>

[?][Link 1]

这里的crawl对应着-

[?][Link 1]

<table> 
 <tbody> 
  <tr> 
   <td> 
    <div>
      1 
    </div> </td> 
   <td> 
    <div> 
     <div> 
      <code>org.apache.nutch.crawl.Crawler</code> 
     </div> 
    </div> </td> 
  </tr> 
 </tbody> 
</table>

~~~~~~~~~~~

228-244行

[?][Link 1]

<table> 
 <tbody> 
  <tr> 
   <td> 
    <div>
      1 
    </div> 
    <div>
      2 
    </div> 
    <div>
      3 
    </div> 
    <div>
      4 
    </div> 
    <div>
      5 
    </div> 
    <div>
      6 
    </div> 
    <div>
      7 
    </div> 
    <div>
      8 
    </div> 
    <div>
      9 
    </div> 
    <div>
      10 
    </div> 
    <div>
      11 
    </div> 
    <div>
      12 
    </div> 
    <div>
      13 
    </div> </td> 
   <td> 
    <div> 
     <div> 
      <code>if</code> 
      <code> $</code> 
      <code>local</code> 
      <code>; </code> 
      <code>then</code> 
     </div> 
     <div> 
      <code>&nbsp;</code> 
      <code># fix for the external Xerces lib issue with SAXParserFactory</code> 
     </div> 
     <div> 
      <code>&nbsp;</code> 
      <code>NUTCH_OPTS=</code> 
      <code>"-Djavax.xml.parsers.DocumentBuilderFactory=com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderFactoryImpl $NUTCH_OPTS"</code> 
     </div> 
     <div> 
      <code>&nbsp;</code> 
      <code>EXEC_CALL=</code> 
      <code>"$JAVA $JAVA_HEAP_MAX $NUTCH_OPTS -classpath $CLASSPATH"</code> 
     </div> 
     <div> 
      <code>else</code> 
     </div> 
     <div> 
      <code>&nbsp;</code> 
      <code># check that hadoop can be found on the path</code> 
     </div> 
     <div> 
      <code>&nbsp;</code> 
      <code>if</code> 
      <code>[ $(</code> 
      <code>which</code> 
      <code> hadoop | </code> 
      <code>wc</code> 
      <code> -l ) -</code> 
      <code>eq</code> 
      <code>0 ]; </code> 
      <code>then</code> 
     </div> 
     <div> 
      <code>&nbsp;&nbsp;&nbsp;&nbsp;</code> 
      <code>echo</code> 
      <code>"Can't find Hadoop executable. Add HADOOP_HOME/bin to the path or run in local mode."</code> 
     </div> 
     <div> 
      <code>&nbsp;&nbsp;&nbsp;&nbsp;</code> 
      <code>exit</code> 
      <code>-1;</code> 
     </div> 
     <div> 
      <code>&nbsp;</code> 
      <code>fi</code> 
     </div> 
     <div> 
      <code>&nbsp;</code> 
      <code># distributed mode</code> 
     </div> 
     <div> 
      <code>&nbsp;</code> 
      <code>EXEC_CALL=</code> 
      <code>"hadoop jar $NUTCH_JOB"</code> 
     </div> 
     <div> 
      <code>fi</code> 
     </div> 
    </div> </td> 
  </tr> 
 </tbody> 
</table>

加上最后一行的

[?][Link 1]

<table> 
 <tbody> 
  <tr> 
   <td> 
    <div>
      1 
    </div> </td> 
   <td> 
    <div> 
     <div> 
      <code>exec</code> 
      <code> $EXEC_CALL $CLASS </code> 
      <code>"$@"</code> 
     </div> 
    </div> </td> 
  </tr> 
 </tbody> 
</table>

其实就相当于

=========================================================

[?][Link 1]

[?][Link 1]

[?][Link 1]

<table> 
 <tbody> 
  <tr> 
   <td> 
    <div>
      1 
    </div> </td> 
   <td> 
    <div> 
     <div> 
      <code>-Djavax.xml.parsers.DocumentBuilderFactory=com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderFactoryImpl</code> 
     </div> 
    </div> </td> 
  </tr> 
 </tbody> 
</table>

[?][Link 1]

<table> 
 <tbody> 
  <tr> 
   <td> 
    <div>
      1 
    </div> </td> 
   <td> 
    <div> 
     <div> 
      <code>-Dhadoop.log.dir=/usr/local/nutch-</code> 
      <code>2.2</code> 
      <code>.</code> 
      <code>1</code> 
      <code>/runtime/local/logs</code> 
     </div> 
    </div> </td> 
  </tr> 
 </tbody> 
</table>

[?][Link 1]

<table> 
 <tbody> 
  <tr> 
   <td> 
    <div>
      1 
    </div> </td> 
   <td> 
    <div> 
     <div> 
      <code>-Dhadoop.log.file=hadoop.log</code> 
     </div> 
    </div> </td> 
  </tr> 
 </tbody> 
</table>

[?][Link 1]

<table> 
 <tbody> 
  <tr> 
   <td> 
    <div>
      1 
    </div> </td> 
   <td> 
    <div> 
     <div> 
      <code>-Djava.library.path=/usr/local/nutch-</code> 
      <code>2.2</code> 
      <code>.</code> 
      <code>1</code> 
      <code>/runtime/local/lib/</code> 
      <code>native</code> 
      <code>/Linux-amd64-</code> 
      <code>64</code> 
     </div> 
    </div> </td> 
  </tr> 
 </tbody> 
</table>

[?][Link 1]

<table> 
 <tbody> 
  <tr> 
   <td> 
    <div>
      1 
    </div> </td> 
   <td> 
    <div> 
     <div> 
      <code>-classpath</code> 
     </div> 
    </div> </td> 
  </tr> 
 </tbody> 
</table>

[?][Link 1]

<table> 
 <tbody> 
  <tr> 
   <td> 
    <div>
      1 
    </div> </td> 
   <td> 
    <div> 
     <div> 
      <code>/usr/local/nutch-</code> 
      <code>2.2</code> 
      <code>.</code> 
      <code>1</code> 
      <code>/runtime/local:</code> 
     </div> 
    </div> </td> 
  </tr> 
 </tbody> 
</table>

[?][Link 1]

<table> 
 <tbody> 
  <tr> 
   <td> 
    <div>
      1 
    </div> </td> 
   <td> 
    <div> 
     <div> 
      <code>/usr/local/nutch-</code> 
      <code>2.2</code> 
      <code>.</code> 
      <code>1</code> 
      <code>/runtime/local/conf:</code> 
     </div> 
    </div> </td> 
  </tr> 
 </tbody> 
</table>

[?][Link 1]

<table> 
 <tbody> 
  <tr> 
   <td> 
    <div>
      1 
    </div> </td> 
   <td> 
    <div> 
     <div> 
      <code>/usr/lib/jvm/jdk1.</code> 
      <code>7</code> 
      <code>.0_21/lib/tools.jar:</code> 
     </div> 
    </div> </td> 
  </tr> 
 </tbody> 
</table>

[?][Link 1]

<table> 
 <tbody> 
  <tr> 
   <td> 
    <div>
      1 
    </div> </td> 
   <td> 
    <div> 
     <div> 
      <code>/usr/local/nutch-</code> 
      <code>2.2</code> 
      <code>.</code> 
      <code>1</code> 
      <code>/runtime/local/lib/activation-</code> 
      <code>1.1</code> 
      <code>.jar:</code> 
     </div> 
    </div> </td> 
  </tr> 
 </tbody> 
</table>

[?][Link 1]

<table> 
 <tbody> 
  <tr> 
   <td> 
    <div>
      1 
    </div> </td> 
   <td> 
    <div> 
     <div> 
      <code>/usr/local/nutch-</code> 
      <code>2.2</code> 
      <code>.</code> 
      <code>1</code> 
      <code>/runtime/local/lib/aopalliance-</code> 
      <code>1.0</code> 
      <code>.jar:</code> 
     </div> 
    </div> </td> 
  </tr> 
 </tbody> 
</table>

[?][Link 1]

<table> 
 <tbody> 
  <tr> 
   <td> 
    <div>
      1 
    </div> </td> 
   <td> 
    <div> 
     <div> 
      <code>/usr/local/nutch-</code> 
      <code>2.2</code> 
      <code>.</code> 
      <code>1</code> 
      <code>/runtime/local/lib/apache-nutch-</code> 
      <code>2.2</code> 
      <code>.</code> 
      <code>1</code> 
      <code>.jar:</code> 
     </div> 
    </div> </td> 
  </tr> 
 </tbody> 
</table>

[?][Link 1]

<table> 
 <tbody> 
  <tr> 
   <td> 
    <div>
      1 
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    <div>
      1 
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      <code>/usr/local/nutch-</code> 
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    <div>
      1 
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      <code>/usr/local/nutch-</code> 
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   <td> 
    <div>
      1 
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      <code>/usr/local/nutch-</code> 
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   <td> 
    <div>
      1 
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      <code>/usr/local/nutch-</code> 
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    <div>
      1 
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      <code>/usr/local/nutch-</code> 
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    <div>
      1 
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      <code>/usr/local/nutch-</code> 
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   <td> 
    <div>
      1 
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      <code>/usr/local/nutch-</code> 
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   <td> 
    <div>
      1 
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      <code>/usr/local/nutch-</code> 
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   <td> 
    <div>
      1 
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      <code>/usr/local/nutch-</code> 
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   <td> 
    <div>
      1 
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      <code>/usr/local/nutch-</code> 
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   <td> 
    <div>
      1 
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      <code>/usr/local/nutch-</code> 
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    <div>
      1 
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      <code>/usr/local/nutch-</code> 
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   <td> 
    <div>
      1 
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      <code>/usr/local/nutch-</code> 
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    <div>
      1 
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      <code>/usr/local/nutch-</code> 
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    <div>
      1 
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      <code>/usr/local/nutch-</code> 
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    <div>
      1 
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      <code>/usr/local/nutch-</code> 
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    <div>
      1 
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      <code>/usr/local/nutch-</code> 
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   <td> 
    <div>
      1 
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     <div> 
      <code>/usr/local/nutch-</code> 
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   <td> 
    <div>
      1 
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    <div> 
     <div> 
      <code>/usr/local/nutch-</code> 
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   <td> 
    <div>
      1 
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    <div> 
     <div> 
      <code>/usr/local/nutch-</code> 
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      <code>.jar:</code> 
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   <td> 
    <div>
      1 
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    <div> 
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      <code>/usr/local/nutch-</code> 
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      <code>.jar:</code> 
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    <div>
      1 
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      <code>/usr/local/nutch-</code> 
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      1 
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      <code>/usr/local/nutch-</code> 
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      <code>.jar:</code> 
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    <div>
      1 
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      <code>/usr/local/nutch-</code> 
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    <div>
      1 
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      <code>/usr/local/nutch-</code> 
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      <code>.jar:</code> 
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      1 
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      <code>/usr/local/nutch-</code> 
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    <div>
      1 
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      <code>/usr/local/nutch-</code> 
      <code>2.2</code> 
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      <code>.jar:</code> 
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      1 
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      <code>/usr/local/nutch-</code> 
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      <code>.jar:</code> 
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    <div>
      1 
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      <code>/usr/local/nutch-</code> 
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    <div>
      1 
    </div> </td> 
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      <code>/usr/local/nutch-</code> 
      <code>2.2</code> 
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      <code>1.3</code> 
      <code>.jar:</code> 
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      1 
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      <code>/usr/local/nutch-</code> 
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      <code>.jar:</code> 
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    <div>
      1 
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      <code>2.2</code> 
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      <code>.jar:</code> 
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      1 
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      <code>/usr/local/nutch-</code> 
      <code>2.2</code> 
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      <code>4.1</code> 
      <code>.jar:</code> 
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      1 
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      <code>/usr/local/nutch-</code> 
      <code>2.2</code> 
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      <code>.jar:</code> 
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   <td> 
    <div>
      1 
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     <div> 
      <code>/usr/local/nutch-</code> 
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      <code>.jar:</code> 
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   <td> 
    <div>
      1 
    </div> </td> 
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    <div> 
     <div> 
      <code>/usr/local/nutch-</code> 
      <code>2.2</code> 
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      <code>1</code> 
      <code>.jar:</code> 
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    <div>
      1 
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      <code>/usr/local/nutch-</code> 
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      <code>.jar:</code> 
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   <td> 
    <div>
      1 
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      <code>/usr/local/nutch-</code> 
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   <td> 
    <div>
      1 
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    <div> 
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      <code>.jar:</code> 
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      1 
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      <code>/usr/local/nutch-</code> 
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   <td> 
    <div>
      1 
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      <code>/usr/local/nutch-</code> 
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   <td> 
    <div>
      1 
    </div> </td> 
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    <div> 
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      <code>/usr/local/nutch-</code> 
      <code>2.2</code> 
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  <tr> 
   <td> 
    <div>
      1 
    </div> </td> 
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    <div> 
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      <code>/usr/local/nutch-</code> 
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  <tr> 
   <td> 
    <div>
      1 
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      <code>/usr/local/nutch-</code> 
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   <td> 
    <div>
      1 
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      <code>/usr/local/nutch-</code> 
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   <td> 
    <div>
      1 
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     <div> 
      <code>/usr/local/nutch-</code> 
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  <tr> 
   <td> 
    <div>
      1 
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      <code>/usr/local/nutch-</code> 
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   <td> 
    <div>
      1 
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     <div> 
      <code>/usr/local/nutch-</code> 
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   <td> 
    <div>
      1 
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     <div> 
      <code>/usr/local/nutch-</code> 
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  <tr> 
   <td> 
    <div>
      1 
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     <div> 
      <code>/usr/local/nutch-</code> 
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  <tr> 
   <td> 
    <div>
      1 
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     <div> 
      <code>/usr/local/nutch-</code> 
      <code>2.2</code> 
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  <tr> 
   <td> 
    <div>
      1 
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      <code>/usr/local/nutch-</code> 
      <code>2.2</code> 
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   <td> 
    <div>
      1 
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     <div> 
      <code>/usr/local/nutch-</code> 
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   <td> 
    <div>
      1 
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      <code>/usr/local/nutch-</code> 
      <code>2.2</code> 
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   <td> 
    <div>
      1 
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    <div> 
     <div> 
      <code>/usr/local/nutch-</code> 
      <code>2.2</code> 
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   <td> 
    <div>
      1 
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    <div> 
     <div> 
      <code>/usr/local/nutch-</code> 
      <code>2.2</code> 
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   <td> 
    <div>
      1 
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     <div> 
      <code>/usr/local/nutch-</code> 
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  <tr> 
   <td> 
    <div>
      1 
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   <td> 
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     <div> 
      <code>/usr/local/nutch-</code> 
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   <td> 
    <div>
      1 
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   <td> 
    <div> 
     <div> 
      <code>/usr/local/nutch-</code> 
      <code>2.2</code> 
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   <td> 
    <div>
      1 
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     <div> 
      <code>/usr/local/nutch-</code> 
      <code>2.2</code> 
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   <td> 
    <div>
      1 
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   <td> 
    <div> 
     <div> 
      <code>/usr/local/nutch-</code> 
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   <td> 
    <div>
      1 
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   <td> 
    <div> 
     <div> 
      <code>/usr/local/nutch-</code> 
      <code>2.2</code> 
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  <tr> 
   <td> 
    <div>
      1 
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    <div> 
     <div> 
      <code>/usr/local/nutch-</code> 
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   <td> 
    <div>
      1 
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   <td> 
    <div> 
     <div> 
      <code>/usr/local/nutch-</code> 
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      <code>.jar:</code> 
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   <td> 
    <div>
      1 
    </div> </td> 
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    <div> 
     <div> 
      <code>/usr/local/nutch-</code> 
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   <td> 
    <div>
      1 
    </div> </td> 
   <td> 
    <div> 
     <div> 
      <code>/usr/local/nutch-</code> 
      <code>2.2</code> 
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      <code>2.0</code> 
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      <code>.jar:</code> 
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   <td> 
    <div>
      1 
    </div> </td> 
   <td> 
    <div> 
     <div> 
      <code>/usr/local/nutch-</code> 
      <code>2.2</code> 
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      <code>2.2</code> 
      <code>.jar:</code> 
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   <td> 
    <div>
      1 
    </div> </td> 
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    <div> 
     <div> 
      <code>/usr/local/nutch-</code> 
      <code>2.2</code> 
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   <td> 
    <div>
      1 
    </div> </td> 
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    <div> 
     <div> 
      <code>/usr/local/nutch-</code> 
      <code>2.2</code> 
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      <code>2.2</code> 
      <code>.jar:</code> 
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  <tr> 
   <td> 
    <div>
      1 
    </div> </td> 
   <td> 
    <div> 
     <div> 
      <code>/usr/local/nutch-</code> 
      <code>2.2</code> 
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      <code>1.10</code> 
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      <code>.jar:</code> 
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   <td> 
    <div>
      1 
    </div> </td> 
   <td> 
    <div> 
     <div> 
      <code>/usr/local/nutch-</code> 
      <code>2.2</code> 
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      <code>1</code> 
      <code>.jar:</code> 
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   <td> 
    <div>
      1 
    </div> </td> 
   <td> 
    <div> 
     <div> 
      <code>/usr/local/nutch-</code> 
      <code>2.2</code> 
      <code>.</code> 
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      <code>.jar:</code> 
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    </div> </td> 
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   <td> 
    <div>
      1 
    </div> </td> 
   <td> 
    <div> 
     <div> 
      <code>/usr/local/nutch-</code> 
      <code>2.2</code> 
      <code>.</code> 
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      <code>2.5</code> 
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      <code>14</code> 
      <code>.jar:</code> 
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  <tr> 
   <td> 
    <div>
      1 
    </div> </td> 
   <td> 
    <div> 
     <div> 
      <code>/usr/local/nutch-</code> 
      <code>2.2</code> 
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      <code>1.6</code> 
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      <code>6</code> 
      <code>.jar:</code> 
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 <tbody> 
  <tr> 
   <td> 
    <div>
      1 
    </div> </td> 
   <td> 
    <div> 
     <div> 
      <code>/usr/local/nutch-</code> 
      <code>2.2</code> 
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      <code>1</code> 
      <code>.jar:</code> 
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  <tr> 
   <td> 
    <div>
      1 
    </div> </td> 
   <td> 
    <div> 
     <div> 
      <code>/usr/local/nutch-</code> 
      <code>2.2</code> 
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   <td> 
    <div>
      1 
    </div> </td> 
   <td> 
    <div> 
     <div> 
      <code>/usr/local/nutch-</code> 
      <code>2.2</code> 
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      <code>3.0</code> 
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   <td> 
    <div>
      1 
    </div> </td> 
   <td> 
    <div> 
     <div> 
      <code>/usr/local/nutch-</code> 
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      <code>6</code> 
      <code>.RELEASE.jar:</code> 
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   <td> 
    <div>
      1 
    </div> </td> 
   <td> 
    <div> 
     <div> 
      <code>/usr/local/nutch-</code> 
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      <code>3.0</code> 
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      <code>.RELEASE.jar:</code> 
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   <td> 
    <div>
      1 
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   <td> 
    <div> 
     <div> 
      <code>/usr/local/nutch-</code> 
      <code>2.2</code> 
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      <code>3.0</code> 
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      <code>.RELEASE.jar:</code> 
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   <td> 
    <div>
      1 
    </div> </td> 
   <td> 
    <div> 
     <div> 
      <code>/usr/local/nutch-</code> 
      <code>2.2</code> 
      <code>.</code> 
      <code>1</code> 
      <code>/runtime/local/lib/spring-core-</code> 
      <code>3.0</code> 
      <code>.</code> 
      <code>6</code> 
      <code>.RELEASE.jar:</code> 
     </div> 
    </div> </td> 
  </tr> 
 </tbody> 
</table>

[?][Link 1]

<table> 
 <tbody> 
  <tr> 
   <td> 
    <div>
      1 
    </div> </td> 
   <td> 
    <div> 
     <div> 
      <code>/usr/local/nutch-</code> 
      <code>2.2</code> 
      <code>.</code> 
      <code>1</code> 
      <code>/runtime/local/lib/spring-expression-</code> 
      <code>3.0</code> 
      <code>.</code> 
      <code>6</code> 
      <code>.RELEASE.jar:</code> 
     </div> 
    </div> </td> 
  </tr> 
 </tbody> 
</table>

[?][Link 1]

<table> 
 <tbody> 
  <tr> 
   <td> 
    <div>
      1 
    </div> </td> 
   <td> 
    <div> 
     <div> 
      <code>/usr/local/nutch-</code> 
      <code>2.2</code> 
      <code>.</code> 
      <code>1</code> 
      <code>/runtime/local/lib/spring-web-</code> 
      <code>3.0</code> 
      <code>.</code> 
      <code>6</code> 
      <code>.RELEASE.jar:</code> 
     </div> 
    </div> </td> 
  </tr> 
 </tbody> 
</table>

[?][Link 1]

<table> 
 <tbody> 
  <tr> 
   <td> 
    <div>
      1 
    </div> </td> 
   <td> 
    <div> 
     <div> 
      <code>/usr/local/nutch-</code> 
      <code>2.2</code> 
      <code>.</code> 
      <code>1</code> 
      <code>/runtime/local/lib/stax2-api-</code> 
      <code>3.1</code> 
      <code>.</code> 
      <code>1</code> 
      <code>.jar:</code> 
     </div> 
    </div> </td> 
  </tr> 
 </tbody> 
</table>

[?][Link 1]

<table> 
 <tbody> 
  <tr> 
   <td> 
    <div>
      1 
    </div> </td> 
   <td> 
    <div> 
     <div> 
      <code>/usr/local/nutch-</code> 
      <code>2.2</code> 
      <code>.</code> 
      <code>1</code> 
      <code>/runtime/local/lib/stax-api-</code> 
      <code>1.0</code> 
      <code>.</code> 
      <code>1</code> 
      <code>.jar:</code> 
     </div> 
    </div> </td> 
  </tr> 
 </tbody> 
</table>

[?][Link 1]

<table> 
 <tbody> 
  <tr> 
   <td> 
    <div>
      1 
    </div> </td> 
   <td> 
    <div> 
     <div> 
      <code>/usr/local/nutch-</code> 
      <code>2.2</code> 
      <code>.</code> 
      <code>1</code> 
      <code>/runtime/local/lib/stax-api-</code> 
      <code>1.0</code> 
      <code>-</code> 
      <code>2</code> 
      <code>.jar:</code> 
     </div> 
    </div> </td> 
  </tr> 
 </tbody> 
</table>

[?][Link 1]

<table> 
 <tbody> 
  <tr> 
   <td> 
    <div>
      1 
    </div> </td> 
   <td> 
    <div> 
     <div> 
      <code>/usr/local/nutch-</code> 
      <code>2.2</code> 
      <code>.</code> 
      <code>1</code> 
      <code>/runtime/local/lib/tika-core-</code> 
      <code>1.3</code> 
      <code>.jar:</code> 
     </div> 
    </div> </td> 
  </tr> 
 </tbody> 
</table>

[?][Link 1]

<table> 
 <tbody> 
  <tr> 
   <td> 
    <div>
      1 
    </div> </td> 
   <td> 
    <div> 
     <div> 
      <code>/usr/local/nutch-</code> 
      <code>2.2</code> 
      <code>.</code> 
      <code>1</code> 
      <code>/runtime/local/lib/woodstox-core-asl-</code> 
      <code>4.1</code> 
      <code>.</code> 
      <code>1</code> 
      <code>.jar:</code> 
     </div> 
    </div> </td> 
  </tr> 
 </tbody> 
</table>

[?][Link 1]

<table> 
 <tbody> 
  <tr> 
   <td> 
    <div>
      1 
    </div> </td> 
   <td> 
    <div> 
     <div> 
      <code>/usr/local/nutch-</code> 
      <code>2.2</code> 
      <code>.</code> 
      <code>1</code> 
      <code>/runtime/local/lib/wsdl4j-</code> 
      <code>1.6</code> 
      <code>.</code> 
      <code>2</code> 
      <code>.jar:</code> 
     </div> 
    </div> </td> 
  </tr> 
 </tbody> 
</table>

[?][Link 1]

<table> 
 <tbody> 
  <tr> 
   <td> 
    <div>
      1 
    </div> </td> 
   <td> 
    <div> 
     <div> 
      <code>/usr/local/nutch-</code> 
      <code>2.2</code> 
      <code>.</code> 
      <code>1</code> 
      <code>/runtime/local/lib/wstx-asl-</code> 
      <code>3.2</code> 
      <code>.</code> 
      <code>7</code> 
      <code>.jar:</code> 
     </div> 
    </div> </td> 
  </tr> 
 </tbody> 
</table>

[?][Link 1]

<table> 
 <tbody> 
  <tr> 
   <td> 
    <div>
      1 
    </div> </td> 
   <td> 
    <div> 
     <div> 
      <code>/usr/local/nutch-</code> 
      <code>2.2</code> 
      <code>.</code> 
      <code>1</code> 
      <code>/runtime/local/lib/xercesImpl-</code> 
      <code>2.9</code> 
      <code>.</code> 
      <code>1</code> 
      <code>.jar:</code> 
     </div> 
    </div> </td> 
  </tr> 
 </tbody> 
</table>

[?][Link 1]

<table> 
 <tbody> 
  <tr> 
   <td> 
    <div>
      1 
    </div> </td> 
   <td> 
    <div> 
     <div> 
      <code>/usr/local/nutch-</code> 
      <code>2.2</code> 
      <code>.</code> 
      <code>1</code> 
      <code>/runtime/local/lib/xml-apis-</code> 
      <code>1.3</code> 
      <code>.</code> 
      <code>04</code> 
      <code>.jar:</code> 
     </div> 
    </div> </td> 
  </tr> 
 </tbody> 
</table>

[?][Link 1]

<table> 
 <tbody> 
  <tr> 
   <td> 
    <div>
      1 
    </div> </td> 
   <td> 
    <div> 
     <div> 
      <code>/usr/local/nutch-</code> 
      <code>2.2</code> 
      <code>.</code> 
      <code>1</code> 
      <code>/runtime/local/lib/xmlenc-</code> 
      <code>0.52</code> 
      <code>.jar:</code> 
     </div> 
    </div> </td> 
  </tr> 
 </tbody> 
</table>

[?][Link 1]

<table> 
 <tbody> 
  <tr> 
   <td> 
    <div>
      1 
    </div> </td> 
   <td> 
    <div> 
     <div> 
      <code>/usr/local/nutch-</code> 
      <code>2.2</code> 
      <code>.</code> 
      <code>1</code> 
      <code>/runtime/local/lib/xmlParserAPIs-</code> 
      <code>2.6</code> 
      <code>.</code> 
      <code>2</code> 
      <code>.jar:</code> 
     </div> 
    </div> </td> 
  </tr> 
 </tbody> 
</table>

[?][Link 1]

<table> 
 <tbody> 
  <tr> 
   <td> 
    <div>
      1 
    </div> </td> 
   <td> 
    <div> 
     <div> 
      <code>/usr/local/nutch-</code> 
      <code>2.2</code> 
      <code>.</code> 
      <code>1</code> 
      <code>/runtime/local/lib/xmlschema-core-</code> 
      <code>2.0</code> 
      <code>.</code> 
      <code>1</code> 
      <code>.jar:</code> 
     </div> 
    </div> </td> 
  </tr> 
 </tbody> 
</table>

[?][Link 1]

<table> 
 <tbody> 
  <tr> 
   <td> 
    <div>
      1 
    </div> </td> 
   <td> 
    <div> 
     <div> 
      <code>/usr/local/nutch-</code> 
      <code>2.2</code> 
      <code>.</code> 
      <code>1</code> 
      <code>/runtime/local/lib/zookeeper-</code> 
      <code>3.3</code> 
      <code>.</code> 
      <code>1</code> 
      <code>.jar</code> 
     </div> 
    </div> </td> 
  </tr> 
 </tbody> 
</table>

[?][Link 1]

<table> 
 <tbody> 
  <tr> 
   <td> 
    <div>
      1 
    </div> </td> 
   <td> 
    <div> 
     <div> 
      <code>再加上剩下的若干参数</code> 
     </div> 
    </div> </td> 
  </tr> 
 </tbody> 
</table>

=========================================================

分析完毕。

[Link 1]: http://my.oschina.net/qiangzigege/blog/283202#