private void update_command_in_action_file(string command) { var filePath = _fileSystem.combine_paths(_fileSystem.get_current_directory(), "shell", VAGRANT_ACTION_FILE); var contents = _fileSystem.read_file(filePath); var config = new VagrantProperties { Command = command }; _fileSystem.write_file(filePath, TokenReplacer.replace_tokens(config, contents), Encoding.UTF8); }