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Download your first ontology

We’ll download FOAF, an ontology for people and their relationships. You’ll need ohi installed.

Find the ontology

Section titled “Find the ontology”
Terminal window
ohi search foaf

Look for foaf/foaf at version 2014-01-14. The result lists its available formats.

Download it

Section titled “Download it”
Terminal window
ohi get foaf/foaf@2014-01-14 --format owl-turtle

Without a project in the current directory, this saves .ohi/foaf/foaf/2014-01-14/foaf.owl.ttl. If ohi.yaml is present there, it uses that project’s download_dir instead of .ohi. owl-turtle selects OWL in Turtle syntax. Open the file in a text editor to see its definitions. Use --to ontologies for a separate destination, such as ontologies/foaf/foaf/2014-01-14/foaf.owl.ttl.

To record ontology choices in a project and download their dependencies, continue with Manage ontology projects.