X command not found

In this troubleshooting guide we learn how to fix X command not found error message

Introduction

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

X: command not found

or when using sudo you get the following error message

sudo: X: command not found

In Ubuntu X is provided by xserver-xorg-core package.

xserver-xorg-core is:

The Xorg X server is an X server for several architectures and operating systems, which is derived from the XFree86 4.x series of X servers.

The Xorg server supports most modern graphics hardware from most vendors, and supersedes all XFree86 X servers.

More information about X.Org can be found at: URL:https://www.x.org

This package is built from the X.org xserver module.

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

sudo apt-get -y install xserver-xorg-core

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

You can also use apt command to install xserver-xorg-core.

sudo apt -y install xserver-xorg-core

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

sudo aptitude install xserver-xorg-core

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