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我正在尝试为我们的内部品牌 hubot 实施一项新功能。该功能使用 npm 包 simple-ssh（ssh2 的包装器），基本上将环境（即“@hubot 获取版本 DEV）作为输入，获取该环境的服务器和凭据，并运行许多 bash 命令以返回每个服务器上特定软件的版本。

使用console.log（）时，我可以正常运行并查看输出，但我需要附加到数组，以便可以在hubot回复中将其发送回。但是，在每个 .exec 之后，我既不能附加到响应字符串，也不能附加到我从 out(stdout) 函数中创建的数组。

如何在我对 hubot 的回复中使用每个命令的标准输出？

require('dotenv').config('../.env');

const SSH = require('simple-ssh');
const { Resolver } = require('../../../utils/Resolver');

const resolver = new Resolver();
let response = '';
let versions = [];

// parses initial request from flowdock into separate environments
function getEnvsFromRequest(reqEnvsStr) {
  return reqEnvsStr.toUpperCase().replace(/AND/, '').replace(/\s+/g, '').split(',');
}

function getVersions(res) {
  const env = getEnvsFromRequest(res.match[2].toString());
  const resEnv = resolver.resolveEnv(env);
  if (resEnv === null) {
    res.reply(`${env} is not in my list of available environments.`);
    return;
  }
  if (resEnv.length > 0) {
    response = response.concat(`\nHere are the results for ${resEnv}:\n`);
    response = response.concat('------------------------\n');
  }
// Resolve hosts for environment
  let resHosts = [];
  resHosts = resolver.resolveHosts(resEnv);
// Resolve creds for environment
  let resCreds = [];
  resCreds = resolver.resolveCreds(resEnv);

// Loop through available hosts for each environment
  resHosts.forEach((resHost) => {
    dummy = [];
    dummy.push(`${resHost}:\n`);
    const ssh = new SSH({
      host: resHost,
      user: resCreds[0],
      pass: resCreds[1],
    });

    ssh
    // Example 1 version
      .exec('head -3 /app/foo/foo/bar | tail -1 | cut -d \'=\' -f 2', {
        // out(stdout) { response.concat(`Foo foo bar version: ${stdout}`); },
        out(stdout) { dummy.push(`Foo foo bar version: ${stdout}`); },
      })
    // Example 2 version
      .exec('cd /app/foo/bar && ls -td -- * | head -n 1', {
        // out(stdout) { response.concat(`Foo bar version: ${stdout}`); },
        out(stdout) { dummy.push(`Foo bar version: ${stdout}`); },
      })
      .start();
  });
  versions.push(dummy)
}
response.concat(versions.toString());
res.reply(response);
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