Advanced Bash-Scripting Guide : An in-depth exploration of the art of shell scripting by Mendel Cooper &lt;thegrendel(a)theriver.com <mailto:thegrendel@theriver.com>> http://www.tldp.org/LDP/abs/html/ http://www.tldp.org/LDP/abs/abs-guide.pdf Various GCC Manuals at http://www.gnu.org/software/gcc/onlinedocs/ PostgreSQL Documentation : http://www.postgresql.org Note extracted from PostgreSQL Copyright: Permission to use, copy, modify, and distribute this software and its documentation for any purpose, without fee, and without a written agreement is hereby granted, provided that the above copyright notice and this paragraph and the following two paragraphs appear in all copies. Please request the publisher to print the text of the GPL and FDL, that are commonly used, in the Appendix. It will be very good if a cd including the sources and other reference material is attached to the book.