cobra_cli_quickstart_with_persistent_and_local_flags.go

1package main
2
3import (
4	"fmt"
5	"os"
6
7	"github.com/spf13/cobra"
8)
9
10var (
11	// Used for flags
12	userLicense string
13	toggle      bool
14)
15
16func main() {
17	// RootCmd represents the base command when called without any subcommands
18	var rootCmd = &cobra.Command{
19		Use:   "app",
20		Short: "A brief description of your application",
21		Long:  `A longer description that spans multiple lines and likely contains examples.`,
22		Run: func(cmd *cobra.Command, args []string) {
23			fmt.Println("Hello from Cobra!")
24			fmt.Printf("Toggle flag is: %v\n", toggle)
25		},
26	}
27
28	// Persistent flags are available to this command and all subcommands
29	rootCmd.PersistentFlags().StringVar(&userLicense, "license", "", "name of license for the project")
30
31	// Local flags are only available to this specific command
32	rootCmd.Flags().BoolVarP(&toggle, "toggle", "t", false, "Help message for toggle")
33
34	// Execute adds all child commands to the root command and sets flags appropriately.
35	if err := rootCmd.Execute(); err != nil {
36		fmt.Fprintln(os.Stderr, err)
37		os.Exit(1)
38	}
39}