package cmd import ( "fmt" "os" "github.com/spf13/cobra" "github.com/spf13/viper" ) var cfgFile string var RootCmd = &cobra.Command{ Use: "", Short: "Nothing here", } // Execute adds all child commands to the root command and sets flags appropriately. // This is called by main.main(). It only needs to happen once to the rootCmd. func Execute() { if err := RootCmd.Execute(); err != nil { fmt.Println(err) os.Exit(1) } } func init() { cobra.OnInitialize(initConfig) RootCmd.PersistentFlags().StringVar(&cfgFile, "config", "", "config file (default is $HOME/.test.yaml)") } func initConfig() { if cfgFile != "" { viper.SetConfigFile(cfgFile) } viper.AutomaticEnv() if err := viper.ReadInConfig(); err == nil { fmt.Println("Using config file:", viper.ConfigFileUsed()) } }