An example of Go cli usage. Using codegangsta/cli

go-cli

func main() {
	app := cli.NewApp()
	app.Name = "cli"
	app.Version = "0.0.1"
	app.Usage = "Fight the lack of Go knowledge"
	app.Commands = []cli.Command {
		{
			Name: "web",
			Aliases: []string{"s"},
			Usage: "Start the web server.",
			Action: func(c *cli.Context) {
				fmt.Println("Starting server")
				fmt.Printf("Arg count: %d\n", c.Int("port"))
				flag.Set("bind", fmt.Sprintf(":%d", c.Int("port")))
				server()
			},
			Flags: []cli.Flag{
				cli.IntFlag{
					Name: "port",
					Value: 9100,
					Usage: "Port for web-server to bind.",
				},
			},
		},
		{
			Name: "data-server",
			Aliases: []string{"d"},
			Usage: "Start the data server",
			Action: func(c *cli.Context) {
				fmt.Println("Starting data server.")
			},
		},
	}
//	app.Action = func(c *cli.Context) {
//		fmt.Println(toJson(&mem.User{}))
//		fmt.Println(toPrettyJson(&mem.User{}))
//	}

	app.Run(os.Args)
//	server()
}