NSScreenTest command not found

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

Introduction

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

NSScreenTest: command not found

or when using sudo you get the following error message

sudo: NSScreenTest: command not found

In Ubuntu NSScreenTest is provided by gnustep-examples package.

gnustep-examples is:

A collection of examples for the GNUstep libraries. Some of them are useful applications on their own, others are intended only for testing purposes.

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

sudo apt-get -y install gnustep-examples

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

You can also use apt command to install gnustep-examples.

sudo apt -y install gnustep-examples

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

sudo aptitude install gnustep-examples

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