The Free Technology Academy (FTA) 釋出一本免費電子書 “The GNU/Linux operating system“，內容主要圍繞系統管理，例如如何安裝及設定多種不同的伺服器及優化系統等。
官方網站介紹：
The GNU/Linux systems have reached an important level of maturity, allowing to integrate them in almost any kind of work environment, from a desktop PC to the sever facilities of a big company.
In the module called “The GNU/Linux operating system”, the main contents are related with system administration. This book is the main documentation for the module.
書本資料:
* Authors: Remo Suppi Boldrito, Josep Jorba Esteve
* Coordinator: Josep Jorba Esteve
* Licenses: GNU Free Documentation License, Creative Commons Attribute ShareAlike License
* Information: 545 Pages; 18.8 Mb
* Download PDF version