mdadm command not found

In this troubleshooting guide we learn how to fix mdadm command not found error message

Introduction

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

mdadm: command not found

or when using sudo you get the following error message

sudo: mdadm: command not found

In Ubuntu mdadm is provided by mdadm package.

mdadm is:

The mdadm utility can be used to create, manage, and monitor MD (multi-disk) arrays for software RAID or multipath I/O.

This package automatically configures mdadm to assemble arrays during the system startup process. If not needed, this functionality can be disabled.

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

sudo apt-get -y install mdadm

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

You can also use apt command to install mdadm.

sudo apt -y install mdadm

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

sudo aptitude install mdadm

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