node.js 打印系统信息

var util = require("util");
var os = require("os");

var showMem = function () {
    var mem = process.memoryUsage();
    var format = function (bytes) {
        return (bytes / 1024 / 1024).toFixed(2) + 'MB';
    };
    var time = new Date();
    console.log('现在时间：' + time);
    console.log('Porcess: heapTotal ' + format(mem.heapTotal) + ' heapUsed ' + format(mem.heapUsed) + ' rss ' + format(mem.rss));
    console.log( 'nodejs version: ' + process.version); //获取nodejs版本号
    console.log(os.platform());
    console.log(os.release());
    console.log(os.tmpdir());
    console.log(((os.totalmem()) / 1024 / 1024) + 'MB');
    console.log(os.type());
    console.log(os.uptime() / 60 / 60);
    var upTime = '已开机：';
    var upTimeTotalSecond = os.uptime();
    var upHour = parseInt(os.uptime() / 60 / 60);    
    var upMinute = parseInt((upTimeTotalSecond - upHour * 60 * 60) / 60);
    var upSecond = parseInt(upTimeTotalSecond - upHour * 60 * 60 - upMinute * 60);
    upTime = upTime + upHour + '小时' + upMinute + '分钟' + upSecond + '秒';
    console.log(upTime);
    console.log('------------------------------------------------------\n');
    
};
showMem();
// setInterval(showMem,3 * 1000);