alien command not found

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

Introduction

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

alien: command not found

or when using sudo you get the following error message

sudo: alien: command not found

In Ubuntu alien is provided by alien package.

alien is:

Alien allows you to convert LSB, Red Hat, Stampede and Slackware Packages into Debian packages, which can be installed with dpkg.

It can also generate packages of any of the other formats.

This is a tool only suitable for binary packages.

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

sudo apt-get -y install alien

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

You can also use apt command to install alien.

sudo apt -y install alien

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

sudo aptitude install alien

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