Learn Windows PowerShell in a Month of Lunches, Third Edition
Don Jones & Jeffery Hicks
The Big Book of Powershell Error Handling
Dave Wyatt
Energy Efficient Servers
Corey Gough & Ian Steiner & Winston A. Saunders
Personal Cybersecurity
Marvin Waschke
Using and Administering Linux: Volume 1: Getting Started
David Both
Using and Administering Linux (1)
Using and Administering Linux: Volume 2: Advanced Topics
Using and Administering Linux (2)
Using and Administering Linux: Volume 3: Network Services
Using and Administering Linux (3)