ykls command not found

Introduction

When you run more command in linux terminal / console, you get the following error message

ykls: command not found

or when using sudo you get the following error message

sudo: ykls: command not found

Solutions to ykls: command not found

How To Fix ykls: command not found in Ubuntu / Debian / Kali Linux / Raspbian

In Ubuntu ykls is provided by ykls package.

ykls is:

ykls is a utility for listing connected Yubikeys, along with some relevant information, such as enabled modes, firmware version, serial number, identities present in the various key slots, …

For example: $ ykls Reader: Yubico YubiKey FIDO+CCID 00 00 Version: 4.3.7 Serial: 6447364 Slot Authentication (9a): [email protected]

To fix this problem, we can install more using the command below.

sudo apt-get -y install ykls

This command might take some time to finish depending on your machine internet connection.

You can also use apt command to install ykls.

sudo apt -y install ykls

Or if you have aptitude installed you can use the following command.

sudo aptitude install ykls

Summary

In this tutorial we learn how to fix ykls command not found error in Ubuntu / Debian / Kali Linux or Raspbian distribution.