NodeJS' child_process (fork & exec) functions PoC

index.js

const {fork} = require('child_process')
const path = require('path')

let cmd = fork(path.join(__dirname, 'run.js'), [], {cwd: process.cwd(), stdio: ['pipe', 'ipc']})
// sending
cmd.send('david')
// receiving
cmd.on('message', (data) => {
  console.log(data) // Hello david
})
// exit (close)
cmd.on('close', (code) => {
  console.log(code)
})

run.js

const {exec} = require('child_process')

process.on("message", (message) => {
  exec(`sh script.sh ${message}`, (error, stdout, stderr) => {
    if(err) {
      console.error('exec wrong')
      return
    }
    if(stderr) {
      console.log('stderr wrong')
      return
    }
    // transmitting the stdout
    process.send(stdout)
  })
})

script.sh

echo "Hello $1"