child_process的Node JS衍生

const { exec } = require('child_process');

exec('ls -l', (error, stdout, stderr) => {
  if (error) {
    console.error(`执行错误：${error}`);
    return;
  }
  console.log(`输出结果：${stdout}`);
});

const { execFile } = require('child_process');

execFile('ls', ['-l'], (error, stdout, stderr) => {
  if (error) {
    console.error(`执行错误：${error}`);
    return;
  }
  console.log(`输出结果：${stdout}`);
});

const { spawn } = require('child_process');

const ls = spawn('ls', ['-l']);

ls.stdout.on('data', (data) => {
  console.log(`输出结果：${data}`);
});

ls.stderr.on('data', (data) => {
  console.error(`错误输出：${data}`);
});

ls.on('close', (code) => {
  console.log(`子进程退出，退出码：${code}`);
});

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

const child = fork('child.js');

child.on('message', (message) => {
  console.log(`接收到子进程消息：${message}`);
});

child.send('父进程消息');