Attached is a minimal Docbook SGML file and a script which invokes the commands required to make a PDF using pdfjadetex.
Thanks for looking into this.
test.sh
Description: application/shellscript
<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook V4.2//EN"> <book> <title>Some Title Here</title> <titleabbrev>STH</titleabbrev> <bookinfo> <author> <firstname>Neil</firstname> <surname>Roeth</surname> </author> <copyright> <year>2020</year> <holder>Neil Roeth</holder> </copyright> </bookinfo> <chapter> <title>Introduction</title> <para>This is a test. This is only a test. Now, back to our regularly scheduled program.</para> </chapter> </book>