Learning Shell Scripting with Zsh
Gastón Festari
Offensive Shellcode from Scratch
Rishalin Pillay
Zabbix 5 IT Infrastructure Monitoring Cookbook
Nathan Liefting & Brian van Baekel
Ubuntu Linux Unleashed 2021 Edition
Matthew Helmke
CyBOK
Awais Rashid & Howard Chivers & George Danezis & Emil Lupu & Andrew Martin