Ubuntu VPSでスクリプトを実行する際に問題があります。

VPSでスクリプトを実行しようとすると、次のエラーが発生します。

line 1: syntax error near unexpected token `('
line 1: `var Steam = require("steam");

私は仕事をしますbash donation.js。以下はスクリプトの始めです。

var Steam = require("steam");
var SteamUser = require ("steam-user");
var client = new SteamUser();
var SteamTotp = require('steam-totp');

var friends = new Steam.SteamFriends(client.client);

var SteamCommunity = require('steamcommunity');
var community = new SteamCommunity();

var client;

var SteamID = require("steamid");

var TradeOfferManager = require('steam-tradeoffer-manager');
var fs = require('fs');
var request = require('request');

var SteamTrade = require("steam-trade");
var steamTrade = new SteamTrade();

var manager = new TradeOfferManager({
    "steam": client,
    "domain": "example.com",
    "language": "en"

どうすればいいですか？