Help us shape the future of Go! Take the 2026 Go Developer Survey

Why Go
- Case Studies
  
  Common problems companies solve with Go
- Use Cases
  
  Stories about how and why companies use Go
- Security
  
  How Go can help keep you secure by default
Learn
Docs
- Effective Go
  
  Tips for writing clear, performant, and idiomatic Go code
- Go User Manual
  
  A complete introduction to building software with Go
- Standard library
  
  Reference documentation for Go's standard library
- Release Notes
  
  Learn what's new in each Go release
- API
  
  Reference documentation for the pkg.go.dev API
Packages
Community
- Recorded Talks
  
  Videos from prior events
- Meetups
  
  Meet other local Go developers
- Conferences
  
  Learn and network with Go developers from around the world
- Go blog
  
  The Go project's official blog.
- Go project
  
  Get help and stay informed from Go
- Get connected

cli

package

Go to main page

Versions in this module

v0

v0.2.4

Oct 25, 2026

Changes in this version

+ const ExitAwaitingHuman

+ const ExitError

+ const ExitMaxIterations

+ const ExitOK

+ const ExitStopped

+ const ExitTimeout

+ const ExitUsage

+ const Usage

+ func ExitCodeFor(reason event.DoneReason) int

+ type App struct

+ func NewApp(env Environment, commands map[string]Command) *App

+ func (a *App) Run(ctx context.Context, args []string) int

+ type Command interface

+ Run func(ctx context.Context, args []string) int

+ type Environment interface

+ Getenv func(key string) string

+ Stderr func() io.Writer

+ Stdin func() io.Reader

+ StdinIsTerminal func() bool

+ Stdout func() io.Writer