Linux Bible (10th edition)
Christopher Negus
Learning Shell Scripting with Zsh
Gastón Festari
Practical Linux Forensics
Bruce Nikkel
Cross-Site Scripting Attacks: Classification, Attack, and Countermeasures
B. B. Gupta and Pooja Chaudhary
Bash Idioms: Write Powerful, Flexible, Readable Shell Scripts
Carl Albing & J P Vossen