此文未完善。是否可以使用nutch逐步下载，未知。

1、基本操作，构建环境

（1）下载软件安装包，并解压至/usr/search/apache-nutch-2.2.1/

（2）构建runtime

 cd /usr/search/apache-nutch-2.2.1/

ant runtime

（3）验证Nutch安装完成

[root@jediael44 apache-nutch-2.2.1]# cd /usr/search/apache-nutch-2.2.1/runtime/local/bin/
[root@jediael44 bin]# ./nutch 
Usage: nutch COMMAND
where COMMAND is one of:
 inject         inject new urls into the database
 hostinject     creates or updates an existing host table from a text file
 generate       generate new batches to fetch from crawl db
 fetch          fetch URLs marked during generate
 parse          parse URLs marked during fetch
 updatedb       update web table after parsing
 updatehostdb   update host table after parsing
 readdb         read/dump records from page database
 readhostdb     display entries from the hostDB
 elasticindex   run the elasticsearch indexer
 solrindex      run the solr indexer on parsed batches
 solrdedup      remove duplicates from solr
 parsechecker   check the parser for a given url
 indexchecker   check the indexing filters for a given url
 plugin         load a plugin and run one of its classes main()
 nutchserver    run a (local) Nutch server on a user defined port
 junit          runs the given JUnit test
 or
 CLASSNAME      run the class named CLASSNAME
Most commands print help when invoked w/o parameters.

（4）vi /usr/search/apache-nutch-2.2.1/runtime/local/conf/nutch-site.xml 添加搜索任务

<property>
<name>http.agent.name</name>
<value>My Nutch Spider</value>
</property>

 cd /usr/search/apache-nutch-2.2.1/runtime/local/bin/

vi seed.txt

http://nutch.apache.org/

（6）修改网页过滤器  vi /usr/search/apache-nutch-2.2.1/conf/regex-urlfilter.txt 

 vi /usr/search/apache-nutch-2.2.1/conf/regex-urlfilter.txt 

将

# accept anything else
+.

修改为

# accept anything else
+^http://([a-z0-9]*\.)*nutch.apache.org/