3. Install Docbook-XML

The procedure for installing depends on your Linux flavour. In Debian-based distributions like Ubuntu you can use the tool apt or its front-end synaptics. In Red-Hat based distributions you may want to use the tool yum.

Install the following software and its dependencies:

docbook-xml

This package contains the XML DTD for DocBook, which describes the formal structure for documents following this format. DocBook is an XML document type definition (DTD). That is, it contains the "DocBook" document structure. This is used by authors or editors writing documents in the DocBook XML format. DocBook was designed for books, articles, or reference documentation about technical matters or software. It has emerged as an open, standard DTD in the software industry, and is the documentation system of choice for many free software projects.

docbook-utils

The docbook-utils is a set of a few small programs intended to ease everyday use of technical documentation software and more generally use of SGML and XML. We will use it to convert Docbook files to other formats (HTML, RTF, Postscript, PDF).