var gulp = require('gulp');

 var rename = require("gulp-rename");

 // rename via function

 gulp.task('name', function() {

   return gulp.src('./dist/**/*')

     .pipe(rename(function(path) {

       console.log(path)

       var name = new Date().getTime();

       path.basename = name;

     }))

     .pipe(gulp.dest('rename/'))

 })

 // rename via hash

 gulp.task('name2', function() {

   return gulp.src('./dist/**/*')

     .pipe(rename({

         dirname: "main",

         basename: "dong",

         prefix: "",

         suffix: "",

         extname: ""

     }))

     .pipe(gulp.dest('rename/'))

 })