unpaper command not found

Introduction

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

unpaper: command not found

or when using sudo you get the following error message

sudo: unpaper: command not found

Solutions to unpaper: command not found

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

In Ubuntu unpaper is provided by unpaper package.

unpaper is:

unpaper is a post-processing tool for scanned sheets of paper, especially for book pages that have been scanned from previously created photocopies.

The main purpose is to make scanned book pages better readable on screen after conversion to PDF. Additionally, unpaper might be useful to enhance the quality of scanned pages before performing optical character recognition (OCR).

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

sudo apt-get -y install unpaper

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

You can also use apt command to install unpaper.

sudo apt -y install unpaper

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

sudo aptitude install unpaper

Summary

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