// include core lib
const chalk = require('chalk')
const { exec } = require('child_process')

// print "I'm process 1" by first process
exec('ls -la', (error, stdout, stderr) => {
  if (error) {
    console.error(`exec error at process 1: ${error}`)
    return
  }
  console.log()
  console.log(chalk.bgGreen.black('Process 1 stdout'))
  console.log()
  console.log(`stdout: ${stdout}`)
  if (stderr) console.log(`stderr: ${stderr}`)
})

// print "I'm process 2" by secound process
exec('date', (error, stdout, stderr) => {
  if (error) {
    console.error(`exec error at process 2: ${error}`)
    return
  }
  console.log()
  console.log(chalk.bgGreen.black('Process 2 stdout'))
  console.log()
  console.log(`stdout: ${stdout}`)
  if (stderr) console.log(`stderr: ${stderr}`)
})