On 06/11/11 Robert P. J. Day said: > i'm currently checking out some possibilities for ebook/epub > publishing but if someone has the recipe to do the following on my > ubuntu system, that would be ducky. All you need is a few files, and zip. Zipping up an epub book. Given an unzipped epub like this... . |-- content.opf |-- cover.jpg |-- index_split_0.xhtml |-- index_split_1.xhtml |-- index_split_2.xhtml |-- index_split_3.xhtml |-- index_split_4.xhtml |-- index_split_5.xhtml |-- index_split_6.xhtml |-- index_split_7.xhtml |-- META-INF | `-- container.xml |-- mimetype |-- stylesheet.css |-- titlepage.xhtml `-- toc.ncx You can zip it up with the following commands: zip -0X ~/mybook.epub mimetype zip -rDX9 ~/mybook.epub * -x mimetype The trick is populating those files. Unzip an existing .epub and examine them. Mike