const exec = require('child_process').exec
export function start () {
 // 任何你期望执行的cmd命令，ls都可以
 let cmdStr1 = 'your command code'
 let cmdPath = './file/'
 // 子进程名称
 let workerProcess
 runExec(cmdStr1)
 function runExec (cmdStr) {
  workerProcess = exec(cmdStr, { cwd: cmdPath })
  // 打印正常的后台可执行程序输出
  workerProcess.stdout.on('data', function (data) {
   console.log('stdout: ' + data)
  })
  // 打印错误的后台可执行程序输出
  workerProcess.stderr.on('data', function (data) {
   console.log('stderr: ' + data)
  })
  // 退出之后的输出
  workerProcess.on('close', function (code) {
   console.log('out code：' + code)
  })
 }
}

npm install node-cmd --save

var cmd=require('node-cmd');
 
  cmd.get(
    'pwd',
    function(err, data, stderr){
      console.log('the current working dir is : ',data)
    }
  );
 
  cmd.run('touch example.created.file');
 
  cmd.get(
    'ls',
    function(err, data, stderr){
      console.log('the current dir contains these files :\n\n',data)
    }
  );
 
  cmd.get(
    `
      git clone https://github.com/RIAEvangelist/node-cmd.git
      cd node-cmd
      ls
    `,
    function(err, data, stderr){
      if (!err) {
        console.log('the node-cmd cloned dir contains these files :\n\n',data)
      } else {
        console.log('error', err)
      }
 
    }
  );