Simply, i can't use the child_process.execFile(). It always contain error in callback.
child.js
console.log('I\'m child');
main.js
var cp = require('child_process');
cp.execFile('./child.js', function (err, stdout,stderr) {
console.log('Err: ',err);
console.log('STDerr: ',stderr);
});
The error object in the callback is
{ [Error: spawn Unknown system errno 193]
code: 'Unknown system errno 193',
errno: 'Unknown system errno 193',
syscall: 'spawn' }
The problem is that child.js is not a valid executable program. If you are on Linux or Mac you can fix that by writing this at the very top of child.js:
#!/usr/bin/env node
You will then need to say chmod +x child.js to make the file executable. The line is called a "shebang line" and it tells the system what interpreter to use to run the rest of the file. You'll need to have node in your $PATH for it to work.
If you don't like that, or are not using a Unix-like system, you can do this:
cp.execFile('/some/path/to/node', ['./child.js'])
The first argument must be the full path to your node interpreter program (perhaps node.exe on Windows, I don't know if that matters).
Finally, none of this really makes that much sense if you don't really need to launch a second node interpreter process. You can try including one file in the other--some ideas for that are here: How do I include a JavaScript file in another JavaScript file?
