split file test

sf-test.js

// npm install --save split-file
// https://github.com/tomvlk/node-split-file
var sf = require('split-file');

sf.splitFile('unicorn.png', 10, function(err, names) {
  if(err) return console.log(err);
  console.log(names);

  sf.mergeFiles(names, 'unicorn.merge.png', function(err, outputFile) {
    if(err) return console.log(err);
    console.log(outputFile);
  });
});