1. Introduction

A CD-ROM book usually has some subbooks. For example, a certain CD-ROM book has three subbooks; Japanese dictionary, Japense English dictinary and English Japanese dictionary. Each subbook itself is an independent book.

(CD-ROM book) +-----------------------------------+ | [English Dicctionary] (subbook) | | [Japanese Dicctionary](subbook) | | [Encyclopedia] (subbook) | +-----------------------------------+

A CD-ROM book of EB/EBG/EBXA/EBXA-C/S-EBXA format has the file `catalog', and a CD-ROM book of EPWING format has the file `catalogs'. The files define what subbooks the CD-ROM book has. They are resides at the top directory of the CD-ROM book.

ebrefile reads an original catalog file and builds a new catalog file which defines the subbooks only specified by an user. In other words, ebrefile can deletes particular subbook definitions from a catalog file. If a CD-ROM book has three subbooks, ebrefile can imports any one or two subbooks to the new catalog file. The ebrefile command is useful when you want to copy only a part of a CD-ROM book to a hard disk. ebrefile is a part of EB Library distribution.

ebrefile is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version.

ebrefile is distributed in the hope that it will be useful, but without any warranty; without even the implied warranty of merchantability or fitness for a particular purpose. See the GNU General Public License for more details.

In addition, you must follow the licenses of your CD-ROM books. Though ebzip is free software, your books may not be free. ebrefile modifies contents of a certain file in a CD-ROM book. Please be careful.

This is edition 4.0, for EB Library version 4.0.