node_modules/spawn-command/examples/simple.js

var spawnCommand = require('../'),
    command = (process.platform === 'win32') ? 'echo "Hello spawn"' : 'echo "Hello spawn" | base64',
    child = spawnCommand(command);

child.stdout.on('data', function (data) {
  console.log('data', data.toString());
});

child.on('exit', function (exitCode) {
  console.log('exit', exitCode);
});