add manage command

cmd/cmd.go

@@ -0,0 +1,34 @@
+package cmd
+
+import (
+	"fmt"
+	"github.com/spf13/cobra"
+	"log"
+)
+
+var (
+	version  = "TempVersion" //use ldflags replace
+	codename = "V2bX"
+	intro    = "A V2board backend based on Xray-core"
+)
+
+func showVersion() {
+	fmt.Printf("%s %s (%s) \n", codename, version, intro)
+	// Warning
+	fmt.Println(Warn("This version need V2board version >= 1.7.0."))
+	fmt.Println(Warn("This version changed config file. Please check config file before running."))
+}
+
+var command = &cobra.Command{
+	Use: "V2bX",
+	PreRun: func(_ *cobra.Command, _ []string) {
+		showVersion()
+	},
+}
+
+func Run() {
+	err := command.Execute()
+	if err != nil {
+		log.Println("execute failed, error:", err)
+	}
+}