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The latest major version is v2.

Published: Mar 31, 2020 | License: MIT

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cli is a simple, fast, and fun package for building command line apps in Go. The goal is to enable developers to write fast and distributable command line applications in an expressive way.

Usage Documentation

Usage documentation exists for each major version


Make sure you have a working Go environment. Go version 1.10+ is supported. See the install instructions for Go.


Make sure your PATH includes the $GOPATH/bin directory so your commands can be easily used:

export PATH=$PATH:$GOPATH/bin

Supported platforms

cli is tested against multiple versions of Go on Linux, and against the latest released version of Go on OS X and Windows. For full details, see ./.travis.yml and ./appveyor.yml.

Using v1 releases

$ go get
import (

Using v2 releases

Warning: v2 is in a pre-release state.

$ go get
import (
  "" // imports as package "cli"