passwdrelated

passwdrelated is a diagnostic utility used in Unix and Unix-like operating systems for examining and managing password file entries and authentication settings. Its primary function is to report on the status of the system's password database, typically located in /etc/passwd and /etc/shadow, highlighting any irregularities that could compromise system security.

The tool reads the password files and checks for inconsistencies such as missing password hashes, expired credentials, or keys that are in an unusable state. It also verifies compliance with user account policies, including minimum password age, maximum password age, and password complexity requirements. Additionally, passwdrelated can identify scenarios where the password hash contains attributes that indicate encryption methods that have been discontinued, and it can recommend more secure alternatives.

By providing a detailed report, passwdrelated allows administrators to quickly pinpoint accounts that require immediate attention. It can flag users who have never changed their password, accounts with the same password hash indicating potential duplication, and users whose password field indicates an unusable or malformed entry. In many distributions, this utility can be invoked from the command line with options for filtering output, generating alerts, or automatically correcting certain issues such as updating a placeholder password for new accounts.

Typical usage involves running the command as a privileged user to generate a full audit. The result typically includes summary statistics: number of total users, number of locked accounts, number of accounts with blank passwords, and number of expired passwords. Administrators may script the output to trigger automated remediation or alerting systems, ensuring that the system remains compliant with security baselines.

Because password security remains a critical component of system administration, tools like passwdrelated are often part of routine maintenance or compliance checking suites, especially in environments that mandate rigorous security audits or adhere to frameworks such as CIS Benchmarks or ISO 27001.