backup-whatsthis command not found

In this troubleshooting guide we learn how to fix backup-whatsthis command not found error message

Introduction

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

backup-whatsthis: command not found

or when using sudo you get the following error message

sudo: backup-whatsthis: command not found

In Ubuntu backup-whatsthis is provided by chiark-backup package.

chiark-backup is:

These are the backup scripts used by chiark.greenend.org.uk and other systems belonging to the Sinister Greenend Organisation. Features:

Suitable for single systems and small networks.
Reasonably simple; they do what you tell it to.
Hard failures when individual systems fail, to encourage fixing ! If you have a larger site you may wish to look at Amanda.

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

sudo apt-get -y install chiark-backup

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

You can also use apt command to install chiark-backup.

sudo apt -y install chiark-backup

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

sudo aptitude install chiark-backup

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