AWS Resource Tagging Commands with the AWS CLI
Use the AWS CLI to manage AWS resource tags, verify tag changes, search by tag filters, and build a simple cost-allocation tagging workflow.
AWS Resource Tagging Commands with the AWS CLI Read More »
Terraform Workspaces for Development and Production Environments
Use one Terraform configuration for development and production with workspaces, workspace-specific maps, separate state, and practical AWS examples.
Terraform Workspaces for Development and Production Environments Read More »
Finding and Safely Archiving Old Log Files with Bash
Use Bash find to locate log files by age, review matching paths, and copy old logs into a structured archive without modifying the originals.
Finding and Safely Archiving Old Log Files with Bash Read More »
SQL Indexes and Query Performance in PostgreSQL
Understand how PostgreSQL indexes help queries find rows efficiently. This tutorial covers single-column and composite indexes, query plans, EXPLAIN ANALYZE, and common indexing mistakes.
SQL Indexes and Query Performance in PostgreSQL Read More »
Working with Dates and Times in Python
Learn to create Python dates and date-time values, calculate due dates with timedelta, format readable output, and build a simple appointment schedule.
Working with Dates and Times in Python Read More »
How to Create an ECR Repository and Push a Docker Image with AWS CLI
Use AWS CLI and Docker to create an Amazon ECR repository, publish tagged container images, and confirm that they were stored successfully.
How to Create an ECR Repository and Push a Docker Image with AWS CLI Read More »
Terraform Resource Dependencies and Lifecycle Rules
Understand Terraform’s dependency graph and apply lifecycle rules to protect production resources, reduce replacement downtime, and manage intentional external changes.
Terraform Resource Dependencies and Lifecycle Rules Read More »
How to Use Case Statements in Bash
Learn Bash case statement syntax, pattern matching, default branches, and nested examples through an environment-based deployment script.
How to Use Case Statements in Bash Read More »
SQL DISTINCT and NULL Values: Finding Unique and Missing Data
Understand how SQL DISTINCT handles duplicate and NULL values, with practical examples using IS NULL, IS NOT NULL, and CASE.
SQL DISTINCT and NULL Values: Finding Unique and Missing Data Read More »
Python Modules and Imports: Organize Reusable Code
Learn how Python modules and imports help you split programs into reusable files with beginner-friendly validation and utility examples.
Python Modules and Imports: Organize Reusable Code Read More »