package.json{ "name": "asyncFile", "version": "0.0.1", "dependencies":{ "fs-sync":"", "later":"" }}

var fsSync = require('fs-sync');var fs = require('fs');var util = require("util");var later = require("later");//需要同步的文件夾路徑var path = { "pathOne": "/home/lincoln/testAsync/dirOne/", "pathTwo": "/home/lincoln/testAsync/dirTwo/"};//需要同步的文件夾名稱var asyncDir = ["img", "music"];var dirFilesOne;var dirFilesTwo;//讀取文件夾信息function readDir(dirName){ dirFilesOne = fs.readdirSync(path.pathOne + dirName); dirFilesTwo = fs.readdirSync(path.pathTwo + dirName);}//使用fs-sync模塊拷貝文件信息function useFileCopy(sourcePath,distPath,copyFiles) { for(var index in copyFiles){  fsSync.copy(sourcePath+copyFiles[index],distPath+copyFiles[index]) }}//統計需要同步的文件信息function needCopyFiles(sourceFiles, distFiles) { var needCopyFiles = []; for (var index in sourceFiles) {  if (distFiles.indexOf(sourceFiles[index]) == -1) {   needCopyFiles.push(sourceFiles[index]);   console.log("needAsyncFile-->"+sourceFiles[index]);  } } return needCopyFiles;}//同步文件function copyFile(dirName) { var sourcePath = path.pathOne + dirName +"/"; var distPath = path.pathTwo + dirName +"/"; readDir(dirName) useFileCopy(sourcePath,distPath,needCopyFiles(dirFilesOne,dirFilesTwo)); readDir(dirName); useFileCopy(distPath,sourcePath,needCopyFiles(dirFilesTwo,dirFilesOne));}//for (var index in asyncDir) {// //console.log(asyncDir[index])// console.log(new Date() +" 執行同步--->"+asyncDir[index])// copyFile(asyncDir[index]);//}var sched = later.parse.recur().every(10).second(), t = later.setInterval(function() {  for (var index in asyncDir) {   //console.log(asyncDir[index])   console.log(new Date() +" 執行同步--->"+asyncDir[index]);   copyFile(asyncDir[index]);  } }, sched);