Check if tor is running

function isTorRunning(){
  console.log('Checking if Tor is running...');
  var cp = require('child_process');
  cp.exec('ps aux | grep tor', (err, stdout) => {
    if(err){
      console.log('Error finding Tor');
      throw err;
    }
    if(stdout.includes('tor')){
      console.log('Tor is running');
    }else{
      console.log('Tor is not running. Please start Tor');
      process.exit(1);
    }
  });
}