function saveLog (nick, command) {
var dt = new Date();
var today = dt.toFormat('YYYY-MM-DD');
var todaytime = dt.toFormat('YYYY-MM-DD HH24:MI:SS');
    var file = 'log/' + nick + '_' + today + '.log';
    var datetime = '[' + todaytime + '] : ';
    var text = datetime + command + '\r\n';
    fs.appendFile(file, text, function (err) {
        if (err) return console.log(err);
        //console.log('successfully appended : ' + text + '');
    });
}




var fs = require('fs');


function quicklog(s) {
    var logpath = "log/api_quick.log";
    var fs = require('fs');
    s = s.toString().replace(/\r\n|\r/g, '\n'); // hack
    var fd = fs.openSync(logpath, 'a+', 0666);
    fs.writeSync(fd, s + '\n');
    fs.closeSync(fd);
}

quicklog('11')




var winston = require('winston');
  require('winston-daily-rotate-file');
 
  var transport = new (winston.transports.DailyRotateFile)({
    filename: 'log/application-%DATE%.log',
    datePattern: 'YYYY-MM-DD-HH',
    zippedArchive: true,
    maxSize: '20m',
    maxFiles: '14d'
  });
 
  transport.on('rotate', function(oldFilename, newFilename) {
    // do something fun
  });
 
  var logger = winston.createLogger({
    transports: [
      transport
    ]
  });
 
  logger.info('Hello World!');

  /*
  npm install winston-daily-rotate-file
 
  */