x86_64-linux-gnu-cpp-9 command not found

In this troubleshooting guide we learn how to fix x86_64-linux-gnu-cpp-9 command not found error message

Introduction

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

x86_64-linux-gnu-cpp-9: command not found

or when using sudo you get the following error message

sudo: x86_64-linux-gnu-cpp-9: command not found

In Ubuntu x86_64-linux-gnu-cpp-9 is provided by cpp-9 package.

cpp-9 is:

A macro processor that is used automatically by the GNU C compiler to transform programs before actual compilation.

This package has been separated from gcc for the benefit of those who require the preprocessor but not the compiler.

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

sudo apt-get -y install cpp-9

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

You can also use apt command to install cpp-9.

sudo apt -y install cpp-9

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

sudo aptitude install cpp-9

In this tutorial we learn how to fix x86_64-linux-gnu-cpp-9 command not found error in Ubuntu / Debian / Kali Linux or Raspbian distribution.