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By Zayden R., August 8, 2026
The shadow-utils 4.20.0 release has removed deprecated password expiration features, following their deprecation in version 4.19.0. This change impacts how Linux systems manage user security, urging sysadmins to update configurations accordingly.
Shadow-utils, the essential suite for managing user and group databases like /etc/shadow and /etc/passwd on Linux systems, has released version 4.20.0. The highlight of this release is not what has been added but rather what has been removed. Specifically, several features related to periodic password expiry, which were deprecated back in December 2025 with version 4.19.0, have now been completely excised.
For sysadmins and engineers who rely on these tools, the removal of these features can have significant implications. Password expiration policies, which some organizations still use as part of their security protocols, will require alternative methods or tools. While the removal was signaled well in advance, with deprecation warnings in the previous release, the onus is now on system administrators to ensure their password management strategies are updated.
The decision to remove these features aligns with a broader industry shift away from periodic password changes as a security measure. Modern security practices increasingly favor methods like two-factor authentication, password managers, and longer, more complex passwords that do not require frequent changes. This update reflects an acknowledgment of these evolving best practices.
Engineers should verify their current password policies and configurations to ensure compatibility with the new shadow-utils release. The absence of the deprecated utilities means scripts and automation relying on them will need adjustments. It's a solid improvement for those moving toward contemporary security approaches, although it may require some administrative legwork.
As the Linux ecosystem continues to evolve, staying informed about such changes is crucial. The shadow-utils project remains a cornerstone of Linux user management, and understanding its updates will help maintain secure and efficient systems.
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