Hi,

There are a lot of questions on that error:
http://www.google.nl/#hl=nl&source=hp&q=No+agents+listed+in+%27http.agent.name%27+property.&oq=No+agents+listed+in+%27http.agent.name%27+property.&aq=f&aqi=&aql=undefined&gs_sm=e&gs_upl=972l972l0l1l1l0l0l0l0l38l38l1l1&bav=on.2,or.r_gc.r_pw.&fp=62113c346707e160&biw=790&bih=328

Add the agents property to your configuration as per the tutorial:
http://wiki.apache.org/nutch/NutchTutorial

Cheers,

> I'm completly new to nutch so I downloaded version 1.3 and worked
> through the beginners tutorial at
> http://wiki.apache.org/nutch/NutchTutorial. The first problem was that I
> did not find  the file "conf/crawl-urlfilter.txt" so I omitted that and
> continued with launiching nutch. Therefore I created a plain text file
> in "/Users/toom/Downloads/nutch-1.3/crawled" called "urls.txt" which
> contains the following text:
> 
> tom:crawled toom$ cat urls.txt
> http://nutch.apache.org/
> 
> So after that I invoked nutch by calling
> tom:bin toom$ ./nutch crawl /Users/toom/Downloads/nutch-1.3/crawled -dir
> /Users/toom/Downloads/nutch-1.3/sites -depth 3 -topN 50
> solrUrl is not set, indexing will be skipped...
> crawl started in: /Users/toom/Downloads/nutch-1.3/sites
> rootUrlDir = /Users/toom/Downloads/nutch-1.3/crawled
> threads = 10
> depth = 3
> solrUrl=null
> topN = 50
> Injector: starting at 2011-07-07 14:02:31
> Injector: crawlDb: /Users/toom/Downloads/nutch-1.3/sites/crawldb
> Injector: urlDir: /Users/toom/Downloads/nutch-1.3/crawled
> Injector: Converting injected urls to crawl db entries.
> Injector: Merging injected urls into crawl db.
> Injector: finished at 2011-07-07 14:02:35, elapsed: 00:00:03
> Generator: starting at 2011-07-07 14:02:35
> Generator: Selecting best-scoring urls due for fetch.
> Generator: filtering: true
> Generator: normalizing: true
> Generator: topN: 50
> Generator: jobtracker is 'local', generating exactly one partition.
> Generator: Partitioning selected urls for politeness.
> Generator: segment:
> /Users/toom/Downloads/nutch-1.3/sites/segments/20110707140238
> Generator: finished at 2011-07-07 14:02:39, elapsed: 00:00:04
> Fetcher: No agents listed in 'http.agent.name' property.
> Exception in thread "main" java.lang.IllegalArgumentException: Fetcher:
> No agents listed in 'http.agent.name' property.
>      at
> org.apache.nutch.fetcher.Fetcher.checkConfiguration(Fetcher.java:1166)
>      at org.apache.nutch.fetcher.Fetcher.fetch(Fetcher.java:1068)
>      at org.apache.nutch.crawl.Crawl.run(Crawl.java:135)
>      at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
>      at org.apache.nutch.crawl.Crawl.main(Crawl.java:54)
> 
> 
> I do not understand what happend here, maybe one of you can help me?

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