rename file using node javascript

1var fs = require('fs');
2 
3fs.rename('sample_old.txt', 'sample_new.txt', function (err) {
4  if (err) throw err;
5  console.log('File Renamed.');
6});

1
2  var fs = require('fs');
3
4fs.rename('mynewfile1.txt', 'myrenamedfile.txt', function (err) {
5  
6  if (err) throw err;
7  console.log('File Renamed!');
8});