Node.js exec（）不执行回调

Question

I have a simple method that executes exec method from child_process using rm -rf as command.

const exec = require('child_process').exec

const Foo = {
  emptyDir: params => {
    exec(`rm -rf ${params.path}`, (err, stdout, stderr) => {
      console.log('test');
    })
  }
}

Foo.emptyDir({path:'./data/*'})

Method works and files do get deleted, however callback never gets executed. What am I missing?

Node version: v6.10.2

Answer 1

First of all, you may want to use one of those modules to remove files in Node:

• https://www.npmjs.com/package/remove
• https://www.npmjs.com/package/rimraf

Now, it's not possible that the console.log('test'); is not executed, because you don't even test for errors so it will be executed even if you don't have the rm command in PATH or if it fails.

What is possible is that you may not see the console.log() output if the STDOUT is redirected or even the console.log redefined. To really see if the callback is called you may try to write some message to a file.