promisify-child_process-exec.js

const util = require('util');
const exec = util.promisify(require('child_process').exec)

const go = async () => {
  try {
    const output1 = await exec('echo 1')
    console.log(output1.stdout)
    const output2 = await exec('echo 2')
    console.log(output2.stdout)
    const output3 = await exec('echo 3')
    console.log(output3.stdout)
  } catch (error) {
    console.log('An exec process exited with a status code other than 0')
    console.log(error)
  }
}
go()