version                 print Go version

All commands take -v flags to emit extra information.
`)
	xexit(2)
}

// commands records the available commands.
var commands = map[string]func(){
	"banner":    cmdbanner,
	"bootstrap": cmdbootstrap,
	"clean":     cmdclean,
	"env":       cmdenv,
	"install":   cmdinstall,
	"list":      cmdlist,
	"test":      cmdtest,
	"version":   cmdversion,
}

		install(arg)
	}
}

// Clean deletes temporary objects.
func cmdclean() {
	xflagparse(0)
	clean()
}

// Banner prints the 'now you've installed Go' banner.
func cmdbanner() {
	xflagparse(0)
	banner()
}

func banner() {
	if vflag > 0 {
		xprintf("\n")
	}
	xprintf("---\n")
	xprintf("Installed Go for %s/%s in %s\n", goos, goarch, goroot)