save pwd in terminal

gistfile1.txt

#!/usr/bin/env node

var stdin = process.openStdin();

// get a password from the console & print stars while the user types
function setPassword () {
  process.stdin.resume();
  process.stdin.setEncoding('utf8');
  process.stdin.setRawMode(true);

  var password = '';
  var keepFirstpwd = '';
  var round = 0;


  process.stdout.write('Set new password: ');

  process.stdin.on('data', function (char) {
    switch (char) {
    case '\n':
    case '\r':
    case '\u0004':
      if (++round === 2) {
        process.stdin.setRawMode(false);

        if (password === keepFirstpwd )
            console.log('\npasswd: OK');
        else
          console.log('\npasswd: passwords do not match, check again');

        stdin.pause();    
        return;
      }

      keepFirstpwd = password;
      password = '';
      process.stdout.write('\nConfirm new password: ');
      break;
    case '\u0003':
      console.log('\npasswd: Cancelled');
      process.exit();
      break;
    default:
      // hide passsword characters
      process.stdout.write('*');
      password += char;
      break;
    }
  });
}


setPassword();