title: whats wrong in my nutch recrawl script
body: <p>hello i am using this script to recrawl my nutch but it gives an exception ..</p>
  
  <pre><code>Indexer: org.apache.hadoop.mapred.FileAlreadyExistsException: Output directory file:/home/hat/crawl/indexes already exists
      at org.apache.hadoop.mapred.FileOutputFormat.checkOutputSpecs(FileOutputFormat.java:111)
      at org.apache.hadoop.mapred.JobClient.submitJobInternal(JobClient.java:772)
      at org.apache.hadoop.mapred.JobClient.submitJob(JobClient.java:730)
      at org.apache.hadoop.mapred.JobClient.runJob(JobClient.java:1249)
      at org.apache.nutch.indexer.Indexer.index(Indexer.java:76)
      at org.apache.nutch.indexer.Indexer.run(Indexer.java:97)
      at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
      at org.apache.nutch.indexer.Indexer.main(Indexer.java:106)
  </code></pre>
  
  <p>script </p>
  
  <pre><code>bin/nutch inject crawl/crawldb urls
  bin/nutch generate crawl/crawldb crawl/segments 
  s1=`ls -d crawl/segments/2* | tail -1`
  echo $s1
  bin/nutch fetch $s1 -threads 100 -depth 3 -topN 5
  bin/nutch updatedb crawl/crawldb $s1 
  
  
  bin/nutch invertlinks crawl/linkdb -dir crawl/segments 
  
  bin/nutch index crawl/indexes crawl/crawldb crawl/linkdb crawl/segments/* 
  </code></pre>
  
  <p>got this from <code>http://wiki.apache.org/nutch/NutchTutorial</code></p>
  
  <p>can any one tell me whats wrong....</p>