golang-cli-cobra-viper
Go CLI Development with Cobra & Viper
Overview
Cobra and Viper are the industry-standard libraries for building production-quality CLIs in Go. Cobra provides command structure and argument parsing, while Viper manages configuration from multiple sources with clear precedence rules.
Key Features:
- 🎯 Cobra Commands: POSIX-compliant CLI with subcommands (
app verb noun --flag) - ⚙️ Viper Config: Unified configuration from flags, env vars, and config files
- 🔄 Integration: Seamless Cobra + Viper plumbing patterns
- 🐚 Shell Completion: Auto-generated completions for bash, zsh, fish, PowerShell
- ✅ Production Ready: Battle-tested by kubectl, docker, gh, hugo
Used By: Kubernetes (kubectl), Docker CLI, GitHub CLI (gh), Hugo, Helm, and 100+ major projects
When to Use This Skill
Activate this skill when:
- Building multi-command CLI tools with subcommands
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