Best link to download books

http://gen.lib.rus.ec/book

Best study material for Linux

1. Sumitabha Das-Your UNIX_Linux_ The Ultimate Guide-McGraw-Hill Education (2012).pdf

2. https://barathiraju.files.wordpress.com/2009/11/redhat-certified-engineer-linux-study-guide1.pdf

3. http://www.tldp.org/LDP/Bash-Beginners-Guide/html/

4. http://tldp.org/LDP/abs/html/

5. http://gen.lib.rus.ec/book/index.php?md5=F0D97C3E2144BB5FDAF9D4959C45F3E6   (

	The Design of the UNIX Operating System (Prentice-Hall Software Series)		Volume:
Author(s):	Maurice J. Bach

)