A Quick Introduction to Unix
by Jim Tyson, et al.
Publisher: Wikibooks 2011
Unix is an operating system designed for use on any kind of computer or computing device. It is a multi-tasking, multi-user system. Unix is also part of the underlying technology of the Internet. Many of the web servers that serve up the WWW for example run a program called Apache under Unix.
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by David A. Curry - Addison-Wesley
The first up-to-date source to provide the UNIX system user or administrator with the information needed to protect data and system from unauthorized use. By following the procedures described, you can protect your UNIX system from most attackers.
by R. Russell, D. Quinlan, C. Yeoh - Filesystem Hierarchy Standard Group
The filesystem standard has been designed to be used by Unix distribution developers, package developers, and system implementors. However, it is primarily intended to be a reference on how to manage a Unix filesystem or directory hierarchy.
by David A. Wheeler
The book provides a set of design and implementation guidelines for writing secure programs for Linux and Unix systems. This document includes specific guidance for a number of languages, including C, C++, Java, Perl, Python, and Ada95.
by IBM Redbooks - IBM
This is a study guide for professionals wishing to prepare for the certification exam to achieve: IBM Certified Specialist - AIX V4.3 System Administration. It helps AIX administrators develop the knowledge and skills required for the certification.