YKCLIENT(1) User Commands YKCLIENT(1) NAME ykclient - YubiCloud One-Time-Password Validation Client SYNOPSIS ykclient [OPTION]... CLIENTID YUBIKEYOTP DESCRIPTION Validate the YUBIKEYOTP one-time-password against the YubiCloud using CLI- ENTID as the client identifier. Mandatory arguments to long options are mandatory for short options too. --help Display this help screen --version Display version information --debug Print debugging information --url URL Validation service URL, for example, "http://api.yubico.com/ws- api/verify" --ca CADIR Path to directory containing Certificate Authoritity, e.g., "/usr/local/etc/CERTS" --cai CAFILE Path to a file holding one or more certificated to verify the peer with --apikey Key API key for HMAC validation of request/response --proxy ip:port Connect to validation service through a proxy, e.g., "socks5h://user:pass@127.0.0.1:1080" Exit status is 0 on success, 1 if there is a hard failure, 2 if the OTP was replayed, 3 for other soft OTP-related failures. REPORTING BUGS Report bugs at <https://github.com/Yubico/yubico-c-client>. ykclient 2.15 August 2026 YKCLIENT(1)
NAME | SYNOPSIS | DESCRIPTION | REPORTING BUGS
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