Free e-books

The Linux Command Line


The Linux Command Line
A Book By William Shotts

New! Second Internet Edition Available Now!

Designed for the new command line user, this 537-page volume covers the same material as but in much greater detail. In addition to the basics of command line use and shell scripting, The Linux Command Line includes chapters on many common programs used on the command line, as well as more advanced topics.

    Released under a Creative Commons license, this book is available for free download in PDF format. Download it here.

    The book is also available in printed form, published by No Starch Press. Copies may be purchased wherever fine books are sold. No Starch Press also offers electronic formats for popular e-readers.


Guide to the Secure Configuration of Red Hat Enterprise Linux 5


The purpose of this guide is to provide security configuration recommendations for the Red Hat Enterprise Linux (RHEL) 5 operating system. The guidance provided here should be applicable to all variants (Desktop, Server, Advanced Platform) of the product. Recommended settings for the basic operating system are provided, as well as for many commonly-used services that the system can host in a network environment. The guide is intended for system administrators. Readers are assumed to possess basic system administration skills for Unix-like systems, as well as some familiarity with Red Hat’s documentation and administration conventions. Some instructions within this guide are complex.

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Alternative DNS Servers


This is the first e-book (pdf, 11Mb) to survey the commonly-available DNS servers. It helps the reader choose the most suitable server for their site or application.

It addresses performance and security issues, and describes the different scenarios where each server is particularly useful.

It explains how DNS information can be stored in LDAP directories, or SQL databases, which lets the reader built robust DNS systems, that can also be managed by multiple, distributed, system management staff.

It also describes a few specialized DNS servers designed for some unusual purposes.

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GNU/Linux Advanced Administration


GNU/Linux systems have reached a level of maturity that allows to integrate them in almost any kind of work environment, from mobile phones to server farms.

Evolution of this book

The FTA has reused existing course materials from the Universitat Oberta de Catalunya (UOC). The first version of this course book was published in 2004 for the Master Programme in Free software of the UOC. In 2008, this book was translated into English with the help of the SELF (Science, Education and Learning in Freedom) Project, supported by the European Commission's Sixth Framework Programme. In 2009, this material has been improved by the Free Technology Academy. Additionally the FTA has developed a study guide and learning activities which are available for learners enrolled in the FTA Campus.

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Apache Desktop Reference


This book is a reference for people who already know Apache under Linux. The purpose of this book is to provide a concise but, fairly complete reference to the various Apache knobs and levers with which the webmaster is confronted at compile time, configuration time, and runtime.


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