Node.js的os module 提供了一系列跟操作系统相关的操作函数，比较简单，所以功能也就十分有限。我们可以去官网看各个函数的介绍：

　　http://nodejs.org/api/os.html 

2 var os = require('os'); 3  4 console.log('the os tmpdir is: ' + os.tmpdir()); 5 console.log('the endianness of this os is: ' + os.endianness()); 6 console.log('the hostname of this os is: ' + os.hostname()); 7 console.log('the type of this os is: ' + os.type()); 8 console.log('the platform of this os is: ' + os.platform()); 9 console.log('the arch of this os is: ' + os.arch());10 console.log('the release of the os is: ' + os.release());11 console.log('the uptime os the os is: ' + os.uptime());12 13 14 console.log('the end of line of this os is: ' + os.EOL);  //os.EOL：操作系统的换行符15 console.log('................................................');16 console.log('................................................');17 showObj(os.cpus());18 console.log('................................................');19 console.log('................................................');20 showObj(os.networkInterfaces());21 console.log('................................................');22 console.log('................................................');23 showObj(os.loadavg());24 25 26 27 28 function showObj(obj){29     if (obj == null) {30         console.log('error: ' + obj);    31         return false;32     }33     for (var key in obj)    {34         //key is a string, so we cannot use obj.key to replace obj[key] at here. For example, if name is a property of obj: 　　　　　　//(obj.name is right, but obj."name" is wrong.) 　　　　　　//(obj["name"] is right, but obj[name] is wrong.) 35         if (typeof(obj[key]) == 'array' || typeof(obj[key]) == 'object') {36             showObj(obj[key]);    37         } else {38             if (obj[key] != null)39                 console.log(key + "=" + obj[key]);    40         }41     }42 }43

参考博客地址：http://blog.csdn.net/simpleiseasy/article/details/7253429