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dotnet-system-commandline

Develop .NET command-line applications with System.CommandLine.

71|10|Updated Feb 11, 2026
Search Tags:#csharp#cli#dotnet#command-line#argument parsing#system.commandline
One-click install
npx skills add https://github.com/wshaddix/dotnet-skills --skill dotnet-system-commandline-wshaddix
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: dotnet-system-commandline
Source: https://github.com/wshaddix/dotnet-skills/tree/main/skills/dotnet-system-commandline
Command: npx skills add https://github.com/wshaddix/dotnet-skills --skill dotnet-system-commandline-wshaddix

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill simplifies the creation of robust and user-friendly command-line interfaces (CLIs) for .NET applications, handling complex argument parsing, validation, and user interaction.

Core Features & Use Cases

  • Command and Option Definition: Define hierarchical commands, options, and arguments with strong typing.
  • Custom Parsing and Validation: Implement custom logic for parsing complex types and validating input values.
  • Tab Completion & Help: Automatically generate --help text and enable shell tab completion for your CLI.
  • Testing Utilities: Provides patterns for easily testing your CLI commands and their output.

Quick Start

Use the dotnet-system-commandline skill to create a new C# CLI application that accepts a required --output file path and an optional --verbose flag.

Frequently Asked Questions about dotnet-system-commandline

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I parse complex argument types in a .NET CLI application?▼

To parse complex argument types in a .NET CLI, the System.CommandLine library enables custom type parsing and validation rules. This allows you to define strongly typed options and arguments with specific validation logic for robust command-line input handling.

Does System.CommandLine support dependency injection for .NET command-line apps?▼

Yes, System.CommandLine supports dependency injection for .NET command-line apps. You can integrate DI containers to manage services and dependencies within your CLI commands, ensuring robust and testable architecture for sophisticated .NET tooling.

Can I automatically generate help text and tab completion for a C# CLI tool?▼

Yes, you can automatically generate help text and enable shell tab completion for a C# CLI tool. System.CommandLine provides built-in features to automatically generate `--help` text and configure shell tab completion for your defined commands and options.

What is the best way to test .NET command-line application output and commands?▼

The best way to test .NET command-line application output is by using testing utilities provided by System.CommandLine patterns. These utilities offer structured methods to easily test CLI commands, argument parsing, and their execution output for reliable validation.

Do I need .NET 8.0 to build hierarchical CLI commands with System.CommandLine?▼

You need .NET 8.0 or later and System.CommandLine 2.0.0 or higher to build hierarchical CLI commands. These versions provide the stable API required to define complex command structures, options, and arguments with strong typing.

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