doctest command not found

Introduction

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

doctest: command not found

or when using sudo you get the following error message

sudo: doctest: command not found

Solutions to doctest: command not found

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

In Ubuntu doctest is provided by doctest package.

doctest is:

The doctest program checks examples in source code comments. It is modeled after doctest for Python (http://docs.python.org/library/doctest.html).

Documentation is at https://github.com/sol/doctest-haskell#readme.

This package contains the doctest executable.

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

sudo apt-get -y install doctest

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

You can also use apt command to install doctest.

sudo apt -y install doctest

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

sudo aptitude install doctest

Summary

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