main.go

package main

import (
	"fmt"

	"github.com/spf13/cobra"
)

var cmdRoot = &cobra.Command{
	Run: func(*cobra.Command, []string) {
		fmt.Printf("do something\n")
	},
}

func init() {
	cmdRoot.Flags().SortFlags = false
	cmdRoot.PersistentFlags().SortFlags = false
	cmdRoot.LocalFlags().SortFlags = false
	cmdRoot.Flags().StringP("epsilon", "e", "empty", "help for epsilon")
	cmdRoot.Flags().StringP("zulu", "z", "empty", "help for zulu")
	cmdRoot.Flags().StringP("alpha", "a", "empty", "help for alpha")
}

func main() {
	fmt.Printf("err: %v\n", cmdRoot.Execute())
}