Wireless Hacking with Kali Linux
Hugo Hoffman
NetCat for pentesters - Chiragh
Chiragh
The the Complete Metasploit Guide
Sagar Rahalkar & Nipun Jaswal
Absolute FreeBSD
Michael Warren Lucas
Effective DevOps
Jennifer Davis & Ryn Daniels
sed & awk
Dale Dougherty & Arnold Robbins
Linux iptables Pocket Reference
Gregor N. Purdy