It does not exist a command called 'bin/Crawl'.
If you execute ./bin/nutch you get the list of commands:
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
index run the plugin-based indexer on parsed batches
elasticindex run the elasticsearch indexer - DEPRECATED use the index command instead
solrindex run the solr indexer on parsed batches - DEPRECATED use the index command instead
solrdedup remove duplicates from solr
solrclean remove HTTP 301 and 404 documents from solr - DEPRECATED use the clean command instead
clean remove HTTP 301 and 404 documents and duplicates from indexing backends configured via plugins
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
webapp run a local Nutch web application
junit runs the given JUnit test
or
CLASSNAME run the class named CLASSNAME
Most commands print help when invoked w/o parameters.
Since 'bin/Crawl' command does not exist, it assumes it is a CLASSNAME, therefore the error.
In the past existed a ./bin/nutch crawl (deprecated), but now there is a specific script for crawling. Use this:
./bin/crawl
