ykinfo

Get basic information from a YubiKey. More information: https://developers.yubico.com/yubikey-personalization/Manuals/ykinfo.1.html.

• Display all information from YubiKey:

ykinfo -a

• Get only serial in decimal from YubiKey:

ykinfo -s -q

• Get capabilities from YubiKey:

ykinfo -c