child_process.execFile example

gistfile1.js

var child_process = require('child_process');

// exec: spawns a shell.
child_process.exec('ls -lah /tmp', function(error, stdout, stderr){
	console.log(stdout);
});

// execFile: executes a file with the specified arguments
child_process.execFile('ls', ['-lah', '/tmp'], function(error, stdout, stderr){
	console.log(stdout);
});

@L2L2L

child_process.exec spawns a new subshell every time it's invoked, child_process.execFile doesn't. You can read more here

This made things really clear. Thank you.

This was helpful. Thanks!

Can you give an example of running a python script with execFile? I have tried using 'python myProgram.py' 'myProgram.py' and './myProgram.py' but I get an ENOENT error every time.

@scarrick68

you can child_process.execFile('pwd',callback), check the directory, I guess it's not where you running your command

@scarrick68 have you tried?

child_process.execFile('python', ['./myProgram.py'], (err, stdout, stderr) => {
  if (err) throw err;

  console.log(stdout, stderr);
});

What is this curl command with execFile ?

curl -X GET -u  admin:root -H 'Content-Type: application/json'  http://localhost:8080

How can I call the execFile method to run a bash script that returns a list of values?

My bash file (test.sh) returns a list of 8 values but the below script is printing only the last row of the output.

const { execFile } = require('child_process');
const child = execFile('./test.sh', (error,stdout,stderror) => {
  if (error) {
    throw error;
  }
  console.log(stdout);
});

Does it differenciate this 2 kind of errors:

• child_process didn't find your binary or the process broke;
• a "normal" error code was returned by your binary after execution

How can I execute a js file which is written in es6? I am trying to do something like below:

child_process.execFile('node', ['./script.js'], function(error, stdout, stderr){ console.log(stdout); });

But getting syntax error

how can i open explorer with specific dir with execFile method?