fslice

var fs = require('fs'), _ = require('underscore');
var source = './Dropbox/Camera Uploads/';
var dest = './picframe/';
var size = 1000;
var files = fs.readdirSync(source);
var sample = _.sample(files, size);
for(i=0;i<size;i++) {
    console.log("Copying file: " + (i+1));
    fs.copyFileSync(source + sample[i], dest + sample[i]);
}