Perl has two pseudo-constants describing the current location in your source code, __FILE__ and __LINE__. The Perl 5 module Dir::Self adds __DIR__, which expands to the directory your source file is in, as an absolute pathname.
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.