Hacking Linux
Phil J Hack
SSH Mastery: OpenSSH, PuTTY, Tunnels and Keys
Michael W Lucas
Practical Digital Forensics
Richard Boddington
Practical System Programming with C: Pragmatic Example Applications ...
Sri Manikanta Palakollu
GitHub For Dummies
Sarah Guthals & Phil Haack
Linux Bible (10th edition)
Christopher Negus
Cyber Security and Network Security
Sabyasachi Pramanik & Debabrata Samanta & M. Vinay & Abhijit Guha