The Advanced Bash Scripting Guide is copyright © 2000, by Mendel Cooper. The author also asserts copyright on all previous versions of this document. 
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This document may only be distributed subject to the terms and conditions set forth in the Open Publication License (version 1.0 or later), http://www.opencontent.org/openpub/. The following license options also apply.
1 A. Distribution of substantively modified versions of this document 2 is prohibited without the explicit permission of the copyright holder. 3 HOWEVER, in the event that the author or maintainer of this document 4 cannot be contacted, the Linux Documentation Project will be authorized 5 to take over custodianship of the document and name a new maintainer, 6 who would then have the right to update and modify the document. 7 8 B. This document may NOT be distributed encrypted or with any form of 9 DRM (Digital Rights Management) or content control mechanism embedded 10 in it. Nor may this document be bundled with other DRM-ed works. 11 12 C. If this document (or any previous version thereof) is made available 13 on a Web or ftp site, then the file must be publicly accessible. 14 No password or other access restrictions to its download may be imposed. 15 16 D. Distribution of the work or derivative of the work in any standard 17 (paper) book form is prohibited unless prior permission is obtained from 18 the copyright holder.
Provision A, above, explicitly prohibits relabeling this document. An example of relabeling is the insertion of company logos or navigation bars into the cover, title page, or the text. The author grants the following exemptions.
"Pure-play" Linux distributors, such as Debian, Red Hat, Mandriva, Knoppix, and others.
Without explicit written permission from the author, distributors and publishers (including on-line publishers) are prohibited from imposing any additional conditions, strictures, or provisions on this document or any previous version of it. As of this update, the author asserts that he has not entered into any contractual obligations that would alter the foregoing declarations.
Essentially, you may freely distribute this book in unaltered electronic form. You must obtain the author's permission to distribute a substantially modified version or derivative work. The purpose of this restriction is to preserve the artistic integrity of this document and to prevent "forking."
If you display or distribute this document or any previous version thereof under any license except the one above, then you are required to obtain the author's written permission. Failure to do so may terminate your distribution rights.
Additionally, the following waiver applies:
1 By copying or distributing this book YOU WAIVE THE RIGHT 2 to use the materials within or any portion thereof in a patent or copyright 3 lawsuit against the Open Source community, its developers, or against any 4 of its associated software or documentation including, but not limited 5 to, the Linux kernel, Open Office, Samba, and Wine. You further waive 6 the right to use any of the materials within this book in testimony or 7 depositions as a plaintiff's "expert witness" in any lawsuit against the 8 Open Source community, any of its developers, or any of its associated 9 software or documentation.
These are very liberal terms, and they should not hinder any legitimate distribution or use of this book. The author especially encourages the use of this book for classroom and instructional purposes.
Certain of the scripts contained in this document are, where noted, released into the Public Domain. These scripts are exempt from the foregoing license and copyright restrictions.
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Hyun Jin Cha has done a Korean translation of version 1.0.11 of this book. Spanish, Portuguese, French, (another French), German, Italian, Russian, Czech, Chinese, Indonesian, and Dutch translations are also available or in progress. If you wish to translate this document into another language, please feel free to do so, subject to the terms stated above. The author wishes to be notified of such efforts.
The author intends that this book be released into the Public Domain after a period of 14 years, that is, in 2014. In the early years of the American republic this was the duration statutorily granted to a copyrighted work.