package main import "fmt" func printUsage() { fmt.Println("Usage: cetus []") fmt.Println("\nCommands: ") fmt.Println(" set Set the background") fmt.Println(" fetch Fetch the response only") fmt.Println(" help Print help") fmt.Println(" version Print Cetus version") fmt.Println("\nServices: ") fmt.Println(" apod NASA Astronomy Picture of the Day") fmt.Println(" bpod Bing Photo of the Day") }