var cmd=process.platform=='win32'?'netstat -ano':'ps aux';
var exec = require('child_process').exec;
var port='8089';

exec(cmd, function(err, stdout, stderr) {
    if(err){ return console.log(err); }

    stdout.split('\n').filter(function(line){
        var p=line.trim().split(/\s+/);
        var address=p[1];

        if(address!=undefined){
            if(address.split(':')[1]==port)
            {
                exec('taskkill /F /pid '+p[4],function(err, stdout, stderr){
                    if(err){
                        return console.log('释放指定端口失败！！');
                    }
                    console.log('占用指定端口的程序被成功杀掉！');
                });
            }
        }
    });
});