Just playing with Go Flags (http://godoc.org/github.com/jessevdk/go-flags) an example with Commands

gistfile1.go

package main

import (
  "fmt"
	"github.com/jessevdk/go-flags"
	"os"
	"strings"
)

func main() {
	parser := flags.NewNamedParser("test", flags.Default)
	parser.AddCommand("example", "Example", "A example of a command", new(Command))

	// Parse flags
	_, err := parser.Parse()
	if err != nil {
		os.Exit(1)
	}
}

type Command struct {
	Offset uint `long:"offset" description:"Offset"`
}

func (c *Command) Execute(args []string) error {
	fmt.Printf("Offset: %d\n", c.Offset)
	fmt.Printf("Test args: %s\n", strings.Join(args, ", "))

	return nil
}