Determine which software requires upgrading
Reviewer: Chris Silva firstname.lastname@example.org FreeBSD
Recognize the importance of balancing the need to keep software up-to-date while minimizing the impact on a production system. Dragonfly and NetBSD use pkgsrc which provides utilities for determining which installed software is out-of-date. FreeBSD provides pkg_version and third-party utilities are also available which integrate with the BSD package managers.
pkgsrc/pkgtool/pkg_chk and make show-downlevel for Dragonfly and NetBSD; pkg_version(1), and the third-party portupgrade