Red Hat Enterprise Linux 6 Administration
Sander van Vugt
CCNA 200-301 Official Cert Guide, Volume 2
Wendell Odom
Hacking the Cable Modem
DerEngel
Black Hat Go
Tom Steele & Chris Patten & Dan Kottmann
Beginning Modern Unix
Manish Jain
Accelerating Development Velocity Using Docker
Kinnary Jangla
Using and Administering Linux: Volume 1
David Both
Hands-on Booting
Yogesh Babar