Managing Amazon RDS Instances with the AWS CLI
Use the AWS CLI to inspect Amazon RDS instances, create recovery snapshots, monitor their status, and perform a carefully planned reboot.
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How to Import Existing AWS Infrastructure into Terraform
Bring manually created AWS resources under Terraform management with import blocks, resource configuration, and a safe plan-and-reconcile workflow.
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Bash Traps and Cleanup on Script Exit
Build more reliable Bash automation with trap handlers that clean up temporary resources, restore state, and preserve meaningful exit codes on success, failure, or interruption.
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SQL Views: Create and Reuse Queries
Learn how SQL views simplify recurring reports by saving reusable queries for customer orders, totals, and filtered results.
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How to Use Python’s logging Module
Learn the basics of Python logging by configuring log output, choosing appropriate log levels, handling errors, and recording exception tracebacks.
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Inspect VPCs and Subnets with AWS CLI Commands
Use read-only AWS CLI commands to explore VPCs, list subnets, inspect routes and network ACLs, and verify public IPv4 assignment settings.
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PowerShell Functions and Parameters: Build Reusable Health Checks
Learn the basics of PowerShell functions and parameters through practical CPU, memory, disk, service, and file-system health-check examples.
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Bash Arrays: Create, Update, Append, and Loop Through Values
Learn the basics of Bash arrays by managing deployment targets, updating values, appending items, and safely looping through every element.
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SQL Window Functions: Row Numbers, Rankings, and Running Totals
Use SQL window functions to analyze customer orders while keeping every order row visible. Learn row numbering, rankings with ties, and customer or company-wide running totals.
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Regular Expressions in Python: Extracting and Validating Email Addresses
Practice Python regex techniques for finding email addresses in logs, validating email-like input, and avoiding common matching mistakes.
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