sudo gedit /etc/profile

#set nutch

export PATH=/home/nutch/runtime/local/bin:$PATH

nutch

//结果如下：

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.

crawl

//结果如下：

Missing seedDir : crawl <seedDir> <crawlID> <solrURL> <numberOfRounds>