[$] Changes in shadow-utils password-expiration features

The shadow-utilsproject provides the tools that handle /etc/shadow,/etc/passwd, and other related databases; ingeneral, it manages users and groups on many Linux systems. While mostsoftware releases are notable for what is added, the recent shadow-utils4.20.0release is most noteworthy for what has been removed. Specifically,several utilities and functionality related to periodic passwordexpiry, which were deprecated in the December 2025 4.19.0release, have been removed as planned. It is still possible to managesome aspects of password aging with shadow-utils, but organizationsthat depend on such features should start planning for their completeremoval within a few years.