Add version cmd

Author: mbilski

cmd/oauth2.go

@@ -96,6 +96,8 @@ func OAuth2Cmd() *cobra.Command {
 		},
 	}
 
+	cmd.AddCommand(versionCmd)
+
 	cmd.PersistentFlags().StringVar(&cconfig.ClientID, "client-id", "", "client identifier")
 	cmd.PersistentFlags().StringVar(&cconfig.ClientSecret, "client-secret", "", "client secret")
 	cmd.PersistentFlags().StringVar(&cconfig.GrantType, "grant-type", "", "grant type")

cmd/version.go

@@ -0,0 +1,20 @@
+package cmd
+
+import (
+	"fmt"
+	"runtime/debug"
+
+	"github.com/spf13/cobra"
+)
+
+var versionCmd = &cobra.Command{
+	Use:   "version",
+	Short: "Display version",
+	Run: func(cmd *cobra.Command, args []string) {
+		if info, ok := debug.ReadBuildInfo(); ok && info.Main.Sum != "" {
+			fmt.Println(info)
+		} else {
+			fmt.Println("unknown")
+		}
+	},
+}