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YubiKey Manager CLI, published by Yubico and currently at version 5.9.0, is a Python 3.7+ library and command-line utility designed for low-level configuration of YubiKey hardware tokens. Belonging to the Security/Authentication Tools category, the software exposes the complete two-factor-authentication feature set—OTP, PIV, OpenPGP, FIDO U2F, FIDO2/WebAuthn, OATH-TOTP/HOTP, and PGP—so administrators can script bulk provisioning, rotate credentials, set PIN policies, generate attestation certificates, or factory-reset devices without a GUI. Typical use cases include enterprise fleets that must enroll hundreds of keys silently during OS deployment, DevOps pipelines that inject signing certificates into CI runners, security consultants who audit token configurations, and privacy-focused individuals who automate backup of PIV key material. The tool is cross-platform, supports JSON output for integration with Ansible, Puppet, or custom PowerShell workflows, and is actively maintained; the 5.9.0 milestone is the ninth public release, indicating steady evolution since its inception. Because it relies only on Python 3.7 or later and the companion ykman package, it can be embedded in lightweight containers or run from portable Python installations, making it equally suited to cloud shells and air-gapped workstations. YubiKey Manager CLI is available for free on get.nero.com, with downloads supplied through trusted Windows package sources such as winget, always serving the latest version and enabling batch installation alongside other applications.
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