UNIX TEXT BOOK

Unix System Concepts & Applications : By Sumitabha Das, Fourth Edition.
http://www.mediafire.com/?eyui9mi74a3cl8t

JavaScript Emulator For Linux:-

If you don't have Pc and you want to test any command or any application then you can use Online Linux Java emulator.
To use Java emulator click on below link

http://bellard.org/jslinux/

unix console for windows

UNIX CONSOLE FOR WINDOWS:- 
http://www.mediafire.com/?1hz065cs781tpbu