function getPsInfo(param, callback) { 
	if (process.platform === 'windows') return;
	var pid = param.pid;
	var cmd = "ps auxw | grep " + pid + " | grep -v 'grep'";
	//var cmd = "ps auxw | grep -E '.+?\\s+" + pid + "\\s+'"  ;
	exec(cmd, function(err, output) {
		if (!!err) {
			if (err.code === 1) {
				console.log('the content is null!');
			} else {
				console.error('getPsInfo failed! ' + err.stack);
			}
			callback(err, null);
			return;
		} 
    format(param, output, callback);
	});
};

const monitor = require("pomelo-ansser-monitor");
const param = {
  pid: "@|touch hack.txt",
};
monitor.psmonitor.getPsInfo(param, (err, data) => {
  console.log(data);
});