NAME App::wdq - command line access to Wikidata Query Service DESCRIPTION The command line script wdq, included in CPAN module App::wdq, provides a tool to access Wikidata Query Service . It supports formulation and execution of SPARQL SELECT queries to extract selected information from Wikidata or other Wikibase instances. INSTALLATION Perl should already installed at most operating systems. Otherwise get Perl! FROM CPAN Install sources from CPAN including all dependencies: cpanm App::wdq First install cpanm if missing. If installation of App::wdq fails try cpanm option --notest or install dependencies as packages as described below. PREBUILD PACKAGES Install dependencies as prebuild packages for your operating system: # Debian based systems e.g. Ubuntu (>= 14.04) sudo apt-get install libhttp-tiny-perl librdf-query-perl # Windows/ActiveState ppm install HTTP-Tiny ppm install RDF-Query Then install wdq from CPAN as described above or copy the script to some place in your $PATH: wget https://github.com/nichtich/wdq/raw/master/script/wdq chmod +x wdq The latter method will not install this documentation. USAGE Get a documented list of all command line options: wdq --help query mode (default) Pass a (possibly abbreviated) SPARQL query via STDIN or option --query. wdq < queryfile lookup mode Pass a line-separated list of Wikidata identifiers or Wikimedia project URLs via STDIN or command line arguments: wdq Q1 wdq lookup Q1 echo Q1 | wdq lookup EXAMPLES # get all parts of the solar system wdq -q '?c wdt:P361 wd:Q544' # get all references used at an item wdq -q 'wd:Q1 ?prop [ prov:wasDerivedFrom ?ref ]' # get doctoral advisor graph (academic genealogy) as CSV wdq -q '?student wdt:P184 ?advisor' --ids --format csv # print expanded SPARQL query wdq -n -q '?c wdt:P361 wd:Q544' # execute query and return first 10 tab-separated values wdq -f tsv --limit 10 < query # print result as Markdown Table (requires Catmandu::Exporter::Table) wdq --export Table < query # look up label and description wdq Q42 P9 # look up German Wikipedia article and get label description in French wdq -g fr http://de.wikipedia.org/wiki/Argon COPYRIGHT AND LICENSE Copyright Jakob Voss, 2015- GPL 2.0