rdfsum.sh

#!/bin/sh

#
# pass this script a filename of ntriples data and get back a
# little report about the types of resources in the rdf, e.g.
#
# ed@curry:~/$ rdfsum oreily_catalog.nt
# 6803 <http://purl.org/goodrelations/v1#TypeAndQuantityNode>
# 5861 <http://purl.org/goodrelations/v1#Offering>
# 4564 <http://purl.org/goodrelations/v1#UnitPriceSpecification>
# 4065 <http://vocab.org/frbr/core#Manifestation>
# 2100 <http://vocab.org/frbr/core#Expression>
# 2023 <http://xmlns.com/foaf/0.1/Person>
#

grep 'http://www.w3.org/1999/02/22-rdf-syntax-ns#type' $1 \
  | cut -f 3 -d " " \
  | sort \
  | uniq -c \
  | sort -rn