How to append string to file?

node.js

Solution

This will work, however it may not be the best solution if it is constantly opening and closing the file. For something with quicker writes I would try benchmarking it against fs.createWriteStream, especially because this gives you a scope you can use in routes.

var fs = require("fs");

   //set dummy data as random number
var data = Math.floor(Math.random()*11);
   //Set our log file as a writestream variable with the 'a' flag
var logFile = fs.createWriteStream('log.txt', {
  flags: "a",
  encoding: "encoding",
  mode: 0744
})
   //call the write option where you need to append new data
logFile.write(new Date().toSting + ': ' data);
logFile.write(new Date().toSting + ': ' data);

Problem

I have a several processes node.js. I want to only add one string to one file in each request ( like log file in nginx, apache, etc ). What is the best way do it ? Simple: ``` fs.open(file, "a", 0744, function (err, fd) { if (err) throw err; fs.write(fd, data, null, 'utf8', function (err, written) { if (err) throw err; }); }); ``` or else ?

Original source