m4 command not found

Introduction

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

m4: command not found

or when using sudo you get the following error message

sudo: m4: command not found

Solutions to m4: command not found

How To Fix m4: command not found in Ubuntu / Debian / Kali Linux / Raspbian

In Ubuntu m4 is provided by m4 package.

m4 is:

GNU m4' is an implementation of the traditional UNIX macro processor. It is mostly SVR4 compatible, although it has some extensions (for example, handling more than 9 positional parameters to macros). m4’ also has builtin functions for including files, running shell commands, doing arithmetic, etc. Autoconf needs GNU m4' for generating configure’ scripts, but not for running them.

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

sudo apt-get -y install m4

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

You can also use apt command to install m4.

sudo apt -y install m4

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

sudo aptitude install m4

Summary

In this tutorial we learn how to fix m4 command not found error in Ubuntu / Debian / Kali Linux or Raspbian distribution.