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Short, practical tutorials in Python, SQL, Bash, Terraform, AWS, and PowerShell — written for developers who learn by doing.

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Python Context Managers: Safely Manage SQLite Transactions with `with`

Discover how Python context managers simplify resource cleanup and database transactions. This tutorial uses SQLite, `contextlib.closing`, and custom context managers to safely commit, roll back, and close connections.

How to Filter Objects with Where-Object in PowerShell

Learn to filter PowerShell objects with Where-Object using properties, comparison operators, dates, and multiple conditions in administrative data.

Parsing Bash Script Options with getopts

Build safer Bash deployment scripts by parsing short options with getopts, validating option values, handling errors, and processing positional service names.

Built for people who learn by writing code

Short, focused tutorials with working examples — not filler marketing pages.

Daily Code Guide publishes short tutorials in Python, Bash, SQL, Terraform, AWS, and PowerShell. Each guide is written so a beginner can finish one lesson in a single sitting, while experienced readers can still pick up a useful pattern.

Focused lessons

Each tutorial is a complete mini-lesson: what you will learn, a realistic example, and the commands or code to try.

Language tracks

Content is organized by language and topic — follow Python one week, SQL the next, or jump to Bash and Terraform when a task calls for it.

Real tasks

Examples mirror real work: querying data, scripting deployments, checking services, and handling user input safely.

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Python

Variables, lists, classes, f-strings, dictionaries, and more — practical Python for everyday scripts.

SQL & data

SELECT, WHERE, JOIN, and filtering patterns for reading and combining data from tables.

DevOps & cloud

Terraform, AWS CLI, Bash, and PowerShell guides for automation and infrastructure tasks.

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