[TOC] > [github](https://github.com/spf13/cobra) ## 安裝 `go get -u github.com/spf13/cobra/cobra ` ## demo ``` package main import ( "fmt" "strings" "github.com/spf13/cobra" ) func main() { var echoTimes int var cmdPrint = &cobra.Command{ Use: "print [string to print]", Short: "Print anything to the screen", Long: `print is for printing anything back to the screen. For many years people have printed back to the screen.`, Args: cobra.MinimumNArgs(1), Run: func(cmd *cobra.Command, args []string) { fmt.Println("Print: " + strings.Join(args, " ")) }, } var cmdEcho = &cobra.Command{ Use: "echo [string to echo]", Short: "Echo anything to the screen", Long: `echo is for echoing anything back. Echo works a lot like print, except it has a child command.`, Args: cobra.MinimumNArgs(1), Run: func(cmd *cobra.Command, args []string) { fmt.Println("Echo: " + strings.Join(args, " ")) }, } var cmdTimes = &cobra.Command{ Use: "times [string to echo]", Short: "Echo anything to the screen more times", Long: `echo things multiple times back to the user by providing a count and a string.`, Args: cobra.MinimumNArgs(1), Run: func(cmd *cobra.Command, args []string) { for i := 0; i < echoTimes; i++ { fmt.Println("Echo: " + strings.Join(args, " ")) } }, } cmdTimes.Flags().IntVarP(&echoTimes, "times", "t", 1, "times to echo the input") var rootCmd = &cobra.Command{Use: "app"} rootCmd.AddCommand(cmdPrint, cmdEcho) cmdEcho.AddCommand(cmdTimes) rootCmd.Execute() } ```