firejail-ui command not found

Introduction

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

firejail-ui: command not found

or when using sudo you get the following error message

sudo: firejail-ui: command not found

Solutions to firejail-ui: command not found

How To Fix firejail-ui: command not found in Ubuntu / Debian / Kali Linux / Raspbian

In Ubuntu firejail-ui is provided by firetools package.

firetools is:

Firejail is a SUID security sandbox program that reduces the risk of security breaches by restricting the running environment of untrusted applications using Linux namespaces and seccomp-bpf. It allows a process and all its descendants to have their own private view of the globally shared kernel resources, such as the network stack, process table, mount table.

This package contains the Qt-based frontend Firetools.

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

sudo apt-get -y install firetools

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

You can also use apt command to install firetools.

sudo apt -y install firetools

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

sudo aptitude install firetools

Summary

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