Use the AWS CLI to investigate CloudTrail events, identify who changed an AWS resource, and inspect the API request behind a suspicious change.
How to Use AWS CLI CloudTrail Event Lookup Commands Read More »
Build a beginner-friendly PowerShell script that checks Windows service status and restarts stopped services using Get-Service and Restart-Service.
Managing Windows Services with PowerShell Get-Service and Restart-Service Read More »
Learn to create unique temporary files and directories in Bash with mktemp, then remove them automatically using an exit trap.
Build multi-step customer reports with PostgreSQL temporary tables. Learn how to stage data, update intermediate results, summarize findings, and clean up safely.
Using SQL Temporary Tables for Multi-Step Reports Read More »
Understand the difference between iterables and iterators, then use iter() and next() to process paginated records incrementally in Python.
Python Iterators: Using iter() and next() with Paginated Data Read More »
Use AWS CLI and the elbv2 command group to inspect load balancers, listeners, target groups, and backend health, then safely register or deregister EC2 targets.
AWS CLI Elastic Load Balancer Commands: Inspect and Manage Targets Read More »
Build reliable Windows maintenance automation with PowerShell scheduled-task cmdlets. Create actions, triggers, principals, and settings, then register and test recurring tasks.
Schedule Windows Maintenance Tasks with PowerShell Read More »
Use Bash and xargs to process multiple backup files concurrently while safely handling unusual filenames and controlling system load with a parallel job limit.
Use PostgreSQL EXPLAIN to inspect query plans, identify sequential scans, verify index usage, and troubleshoot searches involving expressions such as LOWER(email).
How to Read PostgreSQL Query Execution Plans with EXPLAIN Read More »
Build cleaner Python record classes with @dataclass, default fields, generated methods, and custom validation using __post_init__.
Python Dataclasses with @dataclass: Fields, Defaults, and Validation Read More »
