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YKINFO(1) YubiKey Personalization Tool M YKINFO(1)

ykinfo - Get basic information from a YubiKey

ykinfo [-s] [-m] [-nkey] [-H] [-v] [-t] [-p] [-1] [-2] [-q] [-a] [-c] [ -V] [-h]

Get basic information from a YubiKey. Can get serial number, version and current touch level. Can get all parameters at once or one at a time. If -q is given only the relevant string from the YubiKey is written to screen.

-s
get the serial number and output it.
-m
get the serial number and output it as modhex.
-nkey
read from the nth key found.
-H
get the serial number and output it as hex.
-v
get the version and output it.
-t
get the touch level and output it.
-p
get the programming sequence and output it.
-1
get the status of slot 1, 1 for programmed and 0 for empty.
-2
get the status of slot 2, 1 for programmed and 0 for empty.
-a
get all the information above.
-c
get YubiKey capability information.
-q
modifier, only show the relevant data from the YubiKey, no extra information.
-V
print tool version and exit

Output information from a YubiKey:
$ ykinfo -s -m -H -v -t -p
serial: 1077254
serial_hex: 107006
serial_modhex: bcicch
version: 2.2.3
touch_level: 1793
programming_sequence: 1
$

Report ykinfo bugs in the issue tracker https://github.com/Yubico/yubikey-personalization/issues

The ykpersonalize home page https://developers.yubico.com/yubikey-personalization/
YubiKeys can be obtained from Yubico http://www.yubico.com/
Version 1.18.0 ykinfo

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