db5-valid command not found

In this troubleshooting guide we learn how to fix db5-valid command not found error message

Introduction

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

db5-valid: command not found

or when using sudo you get the following error message

sudo: db5-valid: command not found

In Ubuntu db5-valid is provided by publican package.

publican is:

Publican is a DocBook XML publication system:

Publican ensures your document is valid,
Publican works to ensure your document is up to publishable standard,
Publican supports skinning to allow you to create your own presentation rules and look, overriding many parts of the default style to meet your publishing needs,
Publican automates producing documentation in several formats: plain text, several variations of HTML output and PDF, hiding boring details.

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

sudo apt-get -y install publican

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

You can also use apt command to install publican.

sudo apt -y install publican

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

sudo aptitude install publican

In this tutorial we learn how to fix db5-valid command not found error in Ubuntu / Debian / Kali Linux or Raspbian distribution.