How To Install w3c-markup-validator on Debian 11

In this tutorial we learn how to install w3c-markup-validator on Debian 11. w3c-markup-validator is W3C Markup Validator

Introduction

In this tutorial we learn how to install w3c-markup-validator on Debian 11.

What is `w3c-markup-validator`

w3c-markup-validator is:

The W3C Markup Validator is a CGI script which lets you enter the URL of a web page which will be then checked against a validating SGML parser for conformance to official W3C recommendations. Pages can also be uploaded.

These are the same scripts that are available on the W3C web site, http://validator.w3.org/.

There are three methods to install w3c-markup-validator on Debian 11. We can use apt-get, apt and aptitude. In the following sections we will describe each method. You can choose one of them.

Install w3c-markup-validator Using apt-get

Update apt database with apt-get using the following command.

sudo apt-get update

After updating apt database, We can install w3c-markup-validator using apt-get by running the following command:

sudo apt-get -y install w3c-markup-validator

Install w3c-markup-validator Using apt

Update apt database with apt using the following command.

sudo apt update

After updating apt database, We can install w3c-markup-validator using apt by running the following command:

sudo apt -y install w3c-markup-validator

Install w3c-markup-validator Using aptitude

If you want to follow this method, you might need to install aptitude first since aptitude is usually not installed by default on Debian. Update apt database with aptitude using the following command.

sudo aptitude update

After updating apt database, We can install w3c-markup-validator using aptitude by running the following command:

sudo aptitude -y install w3c-markup-validator

How To Uninstall w3c-markup-validator on Debian 11

To uninstall only the w3c-markup-validator package we can use the following command:

sudo apt-get remove w3c-markup-validator

Uninstall w3c-markup-validator And Its Dependencies

To uninstall w3c-markup-validator and its dependencies that are no longer needed by Debian 11, we can use the command below:

sudo apt-get -y autoremove w3c-markup-validator

Remove w3c-markup-validator Configurations and Data

To remove w3c-markup-validator configuration and data from Debian 11 we can use the following command:

sudo apt-get -y purge w3c-markup-validator

Remove w3c-markup-validator configuration, data, and all of its dependencies

We can use the following command to remove w3c-markup-validator configurations, data and all of its dependencies, we can use the following command:

sudo apt-get -y autoremove --purge w3c-markup-validator

Dependencies

w3c-markup-validator have the following dependencies:

perl

References

Summary

In this tutorial we learn how to install w3c-markup-validator package on Debian 11 using different package management tools: apt, apt-get and aptitude.