b4 command not found

Introduction

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

b4: command not found

or when using sudo you get the following error message

sudo: b4: command not found

Solutions to b4: command not found

How To Fix b4: command not found in Ubuntu / Debian / Kali Linux / Raspbian

In Ubuntu b4 is provided by b4 package.

b4 is:

This is a helper utility to work with patches made available via a public-inbox archive like lore.kernel.org. It is written to make it easier to participate in a patch-based workflows, like those used in the Linux kernel development.

This package installs the application and library for Python 3.

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

sudo apt-get -y install b4

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

You can also use apt command to install b4.

sudo apt -y install b4

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

sudo aptitude install b4

Summary

In this tutorial we learn how to fix b4 command not found error in Ubuntu / Debian / Kali Linux or Raspbian distribution.