How to output a consoles log to another file as regular text

Question

I'm trying to print the result of my console.log to another .txt file, how would I make this happen? this is what my console.log looks like this: https://i.stack.imgur.com/pYY00.jpg

I'm wanting this printed as regular text to an output file e.g 'output.txt'

You could do basically this: https://stackoverflow.com/questions/3665115/create-a-file-in-memory-for-user-to-download-not-through-server — Austin T French, Nov 22 '17 at 03:36
@AustinFrench I'm not using any html in my program - i want to type something into my terminal and have it output to another file — Aidan el Goste, Nov 22 '17 at 03:43
I get that, So I don't see this as a duplicate but the concept would be the same: Allocate memory, out stuff in it, open a stream and download. I don't have the energy right now to hack it, so perhaps you can or another answerer will — Austin T French, Nov 22 '17 at 03:45

Vitaly Migunov · Accepted Answer · 2017-12-05T04:50:02.887

1

I recommend to use Winston to achieve this. You can set up Winston Transports to output in file winston.add(winston.transports.File, options)

Or if you don't wanna add any npm modules to your app you can just do this

var fs = require('fs');

module.exports = function(text) {
  fs.appendFile('output.txt', text + '\n', function (err) {
    if (err) throw err;
  });
};

And save this to a file in your project directory, for example NameOfYourFile.js.

Then you can just require it in a file that you wanna make output from

var loger = require('./NameOfYourFile');

loger('Logs');
loger('Output');
loger('Working');

And just use loger instead of console.log. You also can easily rename it.

TypeScript version

First, install node modules

npm install @types/node --save-dev

Then create a file for your module, for example, NameOfYourFile.ts

import * as fs from 'fs';
export default function(text) {
  fs.appendFile('output.txt', text + '\n', function (err) {
   if (err) throw err;
 });
};

Then you can import it like this

import loger from './NameOfYourFile';

loger('Logs');
loger('Output');
loger('Working');

edited Dec 05 '17 at 04:50

answered Dec 05 '17 at 00:46

Vitaly Migunov

4,297
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I'm using typescript @Vitaly - it has to be made into a module but thanks for the suggestion – Aidan el Goste Dec 05 '17 at 03:09
I also want to add I'm trying to get this done with fs – Aidan el Goste Dec 05 '17 at 03:15
But my second solution is a module and it using fs – Vitaly Migunov Dec 05 '17 at 03:18
I know that its a module but modules work differently in typescript @Vitaly – Aidan el Goste Dec 05 '17 at 03:57
I add typescript version to my answer – Vitaly Migunov Dec 05 '17 at 04:50

score 0 · Answer 2 · answered Nov 22 '17 at 05:25

0

Can you rewrite your program as a node app and then just run it from the Terminal window instead? Then, you wouldn't need to wrestle with this problem of getting your console output into a file... you could use node's fs instead (Node.js Write a line into a .txt file)

answered Nov 22 '17 at 05:25

siege_Perilous

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9
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It is a node app, and I am already using node's fs already. I'm asking how would I use it to log it to another file. the question you linked asked how to send a string to another file, I want to send a console.log's results – Aidan el Goste Nov 23 '17 at 03:11

score 0 · Answer 3 · answered Dec 05 '17 at 00:29

This answer works, but it isn't what i'm aiming for it will work for most other people i'd assume. you're gonna want to run your program like so:

npm start > output.txt

this will print your console output to the output.txt file I still need to achieve this with node fs so i'd appreciate anymore answers

How to output a consoles log to another file as regular text

3 Answers3