Advanced Persistent Threat Hacking: The Art and Science of Hacking ...
Tyler Wrightson
OpenVZ Essentials
Mark Furman
How Linux Works: What Every Superuser Should Know
Brian Ward
Learning the Bash Shell: Unix Shell Programming
Cameron Newham & Bill Rosenblatt
TCP/IP Illustrated: Volume 1 The Protocols
Kevin R. Fall & W. Richard Stevens
TCP/IP Ilustrated (1)
TCP/IP Illustrated: Volume 2 The Implementation
Gary R. Wright & W. Richard Stevens
TCP/IP Ilustrated (2)
TCP/IP Illustrated: Volume 3 TCP for Transactions, HTTP, NNTP, ...
W. Richard Stevens & Gary R. Wright
TCP/IP Ilustrated (3)