upgrade-system command not found

Introduction

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

upgrade-system: command not found

or when using sudo you get the following error message

sudo: upgrade-system: command not found

Solutions to upgrade-system: command not found

How To Fix upgrade-system: command not found in Ubuntu / Debian / Kali Linux / Raspbian

In Ubuntu upgrade-system is provided by upgrade-system package.

upgrade-system is:

Upgrade-system offers a convenient way to keep a Debian system up-to-date, yet free from accumulated cruft such as obsolete libraries.

It is particularly useful on systems that mix packages from different releases (stable/testing/unstable) and on desktop systems where packages are frequently installed or removed according to evolving user tastes.

By default, it is configured to purge all packages that are not listed as another package’s dependency. Less drastic settings are possible by editing /etc/upgrade-system.conf(5).

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

sudo apt-get -y install upgrade-system

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

You can also use apt command to install upgrade-system.

sudo apt -y install upgrade-system

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

sudo aptitude install upgrade-system

Summary

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