ETHICAL HACKING: A Beginner's Guide to Learn About Ethical Hacking ...
Brendon Alfred
Bash Idioms: Write Powerful, Flexible, Readable Shell Scripts
Carl Albing & J P Vossen
Kubernetes: Up and Running
Kelsey Hightower & Brendan Burns & Joe Beda & Lachlan Evenson
Effective DevOps
Jennifer Davis & Ryn Daniels
SSH Mastery: OpenSSH, PuTTY, Tunnels and Keys
Michael W Lucas