Ohai detects data about your operating system. It can be used standalone, but it's primary purpose is to provide node data to Chef. Ohai will print out a JSON data blob for all the known data about your system. When used with Chef, that data is reported back via node attributes.
Binary packages can be installed with the high-level tool pkgin (which can be installed with pkg_add) or pkg_add(1) (installed by default). The NetBSD packages collection is also designed to permit easy installation from source.
The pkg_admin audit command locates any installed package which has been mentioned in security advisories as having vulnerabilities.
Please note the vulnerabilities database might not be fully accurate, and not every bug is exploitable with every configuration.
Problem reports, updates or suggestions for this package should be reported with send-pr.