aptly exits with 2 on command/flag parse error. #52

cmd/mirror_update.go

@@ -10,7 +10,7 @@ func aptlyMirrorUpdate(cmd *commander.Command, args []string) error {
 	var err error
 	if len(args) != 1 {
 		cmd.Usage()
-		return err
+		return commander.ErrCommandError
 	}
 
 	name := args[0]