The File System State Monitor keeps track of the state of any number of paths and will fire events when said state changes (create/update/delete). FSSM supports using FSEvents on MacOS, Inotify on GNU/Linux, and polling anywhere else.
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.