Download file from S3 to disk

config.json

{ "accessKeyId": "akid", "secretAccessKey": "secret", "region": "us-east-1" }

s3get.js

var AWS = require('aws-sdk');

AWS.config.loadFromPath('./config.json');

// get reference to S3 client
var s3 = new AWS.S3();

var bucket = 'jeffdonthemic-demos';
var file = 'index.js';

var params = {Bucket: bucket, Key: file};
var file = require('fs').createWriteStream('./foo.js');
s3.getObject(params).createReadStream().pipe(file);