node.js - NodeJS: throw er; //Unhandled 'error' event (events.js:72) when using child_process spawn method -

i've made node.js app list .txt files directory recursively and, each one, stuff.

here's app.js:

var spawn = require('child_process').spawn,     dir = spawn('dir', ['*.txt', '/b']);  dir.stdout.on('data', function (data) {     //do stuff each stdout line...     console.log('stdout: ' + data); });  dir.stderr.on('data', function (data) {     //throw errors     console.log('stderr: ' + data); });  dir.on('close', function (code) {     console.log('child process exited code ' + code); }); 

when run node app.js via console, error message below:

events.js:72         throw er; // unhandled 'error' event               ^ error: spawn enoent     @ errnoexception (child_process.js:980:11)     @ process.childprocess._handle.onexit (child_process.js:771:34) 

i'm using node v0.10.13 @ win32 environment.

i way (spawn) because want handle stdout line line (the exec method release entire stdout 1 string).

* update *

by way, using spawn child_process not guarantee output cmd dir line line. i've created question that too.

that happen because dir not executable in windows. it's command shell.
solution problem following:

var dir = spawn('cmd', ['/c', 'dir']); dir.stdout.on("data", function() {     // things }) 

this exact problem here also.