What is it ?

Cobra is both a library for creating powerful modern CLI applications as well as a program to generate applications and command files.

Cobra is used in many Go projects such as Kubernetes, Hugo, and Github CLI to name a few. This list contains a more extensive list of projects using Cobra.

Cobra provides:

• Easy subcommand-based CLIs: app server, app fetch, etc.
• Fully POSIX-compliant flags (including short & long versions)
• Nested subcommands
• Global, local and cascading flags
• Easy generation of applications & commands with cobra init appname & cobra add cmdname
• Intelligent suggestions (app srver… did you mean app server?)
• Automatic help generation for commands and flags
• Automatic help flag recognition of -h, --help, etc.
• Automatically generated shell autocomplete for your application (bash, zsh, fish, powershell)
• Automatically generated man pages for your application
• Command aliases so you can change things without breaking them
• The flexibility to define your own help, usage, etc.
• Optional tight integration with viper for 12-factor apps

Resources

• Documentation

• Github Documentation

• Github Repository