Day Fifteen: Using Python Libraries for DevOps: Parsing JSON and YAML- The #90DaysOfDevOps Challenge
Day Seven: 
Installation Using Package Managers - The #90DaysOfDevOps Challenge
Package Updates Using Automated Scripts for DevOps Efficiency
Day Six: File Permissions and Access Control Lists - The #90DaysOfDevOps Challenge
Day Five: More Scripting & Introduction to User Management - The #90DaysOfDevOps Challenge
Day Four: Shell Scripting- The #90DaysOfDevOps Challenge