var myCommand = &cobra.Command{ Use: "hello-world", Short: "Prints a hello world message", Long: `A simple example command that prints a hello world message to the console.`, Run: func(cmd *cobra.Command, args []string) { cmd.Printf("Hello, World!\n") }, }In this example, we define a new command named "hello-world" with a short description and a longer description. The Run function for this command simply prints out a "Hello, World!" message to the console using the Command Printf function. Overall, the github.com/spf13/cobra package library is a powerful tool for Go developers looking to create robust command-line applications. The Command Printf function is just one of many useful features available in this library.