Update commands and its description

cmd/add.go

@@ -10,7 +10,7 @@ import (
 var (
 	addCmd = &cobra.Command{
 		Use:   "add url",
-		Short: "Bookmark URL with comma-separated tags.",
+		Short: "Bookmark the specified URL.",
 		Args:  cobra.ExactArgs(1),
 		Run: func(cmd *cobra.Command, args []string) {
 			// Read flag and arguments

cmd/delete.go

@@ -11,11 +11,15 @@ var (
 		Use:   "delete [indices]",
 		Short: "Delete the saved bookmarks.",
 		Long: "Delete bookmarks. " +
+			"When a record is deleted, the last record is moved to the removed index. " +
 			"Accepts space-separated list of indices (e.g. 5 6 23 4 110 45) and hyphenated range (e.g. 100-200). " +
 			"If no arguments, all records will be deleted",
 		Run: func(cmd *cobra.Command, args []string) {
+			// Read flags
+			skipConfirmation, _ := cmd.Flags().GetBool("yes")
+
 			// If no arguments, confirm to user
-			if len(args) == 0 {
+			if len(args) == 0 && !skipConfirmation {
 				confirmDelete := ""
 				fmt.Print("Remove ALL bookmarks? (y/n): ")
 				fmt.Scanln(&confirmDelete)
@@ -33,17 +37,21 @@ var (
 				os.Exit(1)
 			}
 
+			if len(oldIndices) == 0 {
+				fmt.Println("No bookmarks deleted")
+				return
+			}
+
 			fmt.Println("Bookmarks has been deleted")
-			if len(oldIndices) > 0 {
 			for i, oldIndex := range oldIndices {
 				newIndex := newIndices[i]
 				fmt.Printf("Index %d moved to %d\n", oldIndex, newIndex)
 			}
-			}
 		},
 	}
 )
 
 func init() {
+	deleteCmd.Flags().BoolP("yes", "y", false, "Skip confirmation prompt and delete ALL bookmarks")
 	rootCmd.AddCommand(deleteCmd)
 }