conf/    - solr configuration and schema
scripts/ - scripts for loading the index


startup/shutdown:
solr: /etc/init.d/tomcat5.5

schema:
solr: /etc/solr/conf/schema.xml

admin tools:
http://solr/
http://solr-dev/solr/

dev server:
solr-dev


(Note that tomcat.policy actually goes in /etc/solr/ itself rather than the conf/ sub-directory.)