PowerShell for Beginners
Alex
Mastering Linux - Fundamentals
Paul Cobbaut
Bash Cookbook - 2nd Edition
Carl Albing & JP Vossen & Cameron Newham
Electronics and Communications Engineering
T. Kishore Kumar & Ravi Kumar Jatoth & V .V. Mani
Mastering Linux - Servers
Mastering Linux - System Administration
Mastering Linux - Networking