While trying to convert a sgml (docbook) file to latex (or other formats
like html) the following occured:
---start---
[ligaard@ligaard ligaard]$ sgml2latex template.docbook
Processing file template.docbook
/usr/bin/nsgmls:<OSFD>0:1:57:W: cannot generate system identifier for
public text "-//OASIS//DTD DocBook V3.0//EN"
/usr/bin/nsgmls:<OSFD>0:1:57:E: reference to entity "ARTICLE" for which no
system identifier could be generated
/usr/bin/nsgmls:<OSFD>0:1:0: entity was defined here
/usr/bin/nsgmls:<OSFD>0:1:57:E: DTD did not contain element declaration for
document type name
/usr/bin/nsgmls:<OSFD>0:2:11:E: element "ARTICLE" undefined
/usr/bin/nsgmls:<OSFD>0:3:23:E: element "ARTICLEINFO" undefined
/usr/bin/nsgmls:<OSFD>0:4:17:E: element "TITLE" undefined
/usr/bin/nsgmls:<OSFD>0:5:18:E: element "AUTHOR" undefined
/usr/bin/nsgmls:<OSFD>0:6:29:E: element "FIRSTNAME" undefined
/usr/bin/nsgmls:<OSFD>0:7:27:E: element "SURNAME" undefined
/usr/bin/nsgmls:<OSFD>0:10:9:E: element "SECT1" undefined
/usr/bin/nsgmls:<OSFD>0:11:17:E: element "TITLE" undefined
/usr/bin/nsgmls:<OSFD>0:12:8:E: element "PARA" undefined
/usr/bin/nsgmls:<OSFD>0:15:17:E: element "SECT2" undefined
/usr/bin/nsgmls:<OSFD>0:16:25:E: element "TITLE" undefined
/usr/bin/nsgmls:<OSFD>0:17:24:E: element "PARA" undefined
/usr/bin/nsgmls:<OSFD>0:21:17:E: element "SECT2" undefined
/usr/bin/nsgmls:<OSFD>0:22:17:E: element "TITLE" undefined
/usr/bin/nsgmls:<OSFD>0:23:24:E: element "PARA" undefined
/usr/bin/sgmlsasp: can't open
`/usr/lib/sgml-tools/dist/article/latex2e/mapping': No such file or
directory
This is TeX, Version 3.14159 (Web2C 7.3.1)
LaTeX2e <1999/12/01> patch level 1
Babel <v3.6Z> and hyphenation patterns for american, french, german,
ngerman, i
talian, nohyphenation, loaded.

(template.docbook.tex)
! Emergency stop.
<*> \nonstopmode\input{template.docbook.tex}
                                            
No pages of output.
Transcript written on template.docbook.log.
[ligaard@ligaard ligaard]$ 
---end----
In the top of the output it says it can't find the DTD, and since I'm a
newbie in sgml/docbook I don't know if it means anything to the error
below: "/usr/bin/sgmlsasp: can't open
`/usr/lib/sgml-tools/dist/article/latex2e/mapping': No such file or
directory"

I looked around a bit and found that the file resides in
"/usr/lib/sgml-tools/dist/sgmltool/latex2e/mapping" (this for sgml2latex -
other for sgml2html).

IN SUMMARY: I think there is a path issue to be solved.

Below follows the small file I was trying to work on (it is from ibm
developernetwork:
http://www-4.ibm.com/software/developer/library/l-docbk.html?dwzone=linux?open&l=335,t=gr,p=docbooks)
---file: template.docbook---START
<!DOCTYPE article PUBLIC "-//OASIS//DTD DocBook V3.0//EN">
   <article>
           <articleinfo>
           <title>Sample DocBook Template</title>
           <author>
                   <firstname>firstname here</firstname>
                   <surname>lastname here</surname>
           </author>
           </articleinfo>
   <sect1>
           <title>Section 1 Title</title>
   <para>
   This is a paragraph.  
   </para>
           <sect2>
                   <title>Section 2 Title</title>
                   <para>
   This is another paragraph...
                   </para>
           </sect2>
           <sect2>
           <title>Section 2 pt. 2</title>
                   <para>
   Yet another paragraph...
                   </para>
           </sect2>
   </sect1>
   </article>
---file: template.docbook---END