如何通过子进程模块调用ssh,以便它使用SSH_ASKPASS变量

npm install ssh2 child_process

const { exec } = require('child_process');
const Client = require('ssh2').Client;

const conn = new Client();
conn.on('ready', function() {
  console.log('SSH connection is ready');
}).connect({
  host: 'your-ssh-host',
  port: 22,
  username: 'your-username',
  password: 'your-password'
});

conn.on('ready', function() {
  console.log('SSH connection is ready');
  exec('export SSH_ASKPASS="/path/to/your/askpass/script"', (err, stdout, stderr) => {
    if (err) {
      console.error(`exec error: ${err}`);
      return;
    }
    console.log(`stdout: ${stdout}`);
    console.error(`stderr: ${stderr}`);
  });
}).connect({
  host: 'your-ssh-host',
  port: 22,
  username: 'your-username',
  password: 'your-password'
});

conn.on('ready', function() {
  console.log('SSH connection is ready');
  exec('export SSH_ASKPASS="/path/to/your/askpass/script"', (err, stdout, stderr) => {
    if (err) {
      console.error(`exec error: ${err}`);
      return;
    }
    console.log(`stdout: ${stdout}`);
    console.error(`stderr: ${stderr}`);
    conn.exec('your-command-here', (err, stream) => {
      if (err) {
        console.error(`exec error: ${err}`);
        return;
      }
      stream.on('close', function(code, signal) {
        console.log('SSH command executed with code: ' + code);
        conn.end();
      }).on('data', function(data) {
        console.log('STDOUT: ' + data);
      }).stderr.on('data', function(data) {
        console.log('STDERR: ' + data);
      });
    });
  });
}).connect({
  host: 'your-ssh-host',
  port: 22,
  username: 'your-username',
  password: 'your-password'
});

stream.on('close', function(code, signal) {
  console.log('SSH command executed with code: ' + code);
  conn.end();
}).on('data', function(data) {
  console.log('STDOUT: ' + data);
}).stderr.on('data', function(data) {
  console.log('STDERR: ' + data);
});