perceptualdiff command not found

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

Introduction

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

perceptualdiff: command not found

or when using sudo you get the following error message

sudo: perceptualdiff: command not found

In Ubuntu perceptualdiff is provided by perceptualdiff package.

perceptualdiff is:

PerceptualDiff is an image comparison utility that makes use of a computational model of the human visual system to compare two images.

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

sudo apt-get -y install perceptualdiff

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

You can also use apt command to install perceptualdiff.

sudo apt -y install perceptualdiff

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

sudo aptitude install perceptualdiff

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