Jasur@HP-jasur MINGW64 ~/Desktop/fotimas/Node.JS/full_node.js_course
$ node server.js
Hello World
<ref *1> Object [global] {
  global: [Circular *1],
  clearImmediate: [Function: clearImmediate],
  setImmediate: [Function: setImmediate] {
    [Symbol(nodejs.util.promisify.custom)]: [Getter]
  },
  clearInterval: [Function: clearInterval],
  clearTimeout: [Function: clearTimeout],
  setInterval: [Function: setInterval],
  setTimeout: [Function: setTimeout] {
    [Symbol(nodejs.util.promisify.custom)]: [Getter]
  },
  queueMicrotask: [Function: queueMicrotask],
  structuredClone: [Function: structuredClone],
  atob: [Getter/Setter],
  btoa: [Getter/Setter],
  performance: [Getter/Setter],
  fetch: [Function: fetch],
  crypto: [Getter]
}

exports

🔹 const { add, subtract, multiply, divide } = require('./math');

const os = require('os');

console.log("Tizim platformasi:", os.platform());         // misol: 'win32' yoki 'linux'
console.log("Tizim arxitekturasi:", os.arch());           // misol: 'x64'
console.log("CPU soni:", os.cpus().length);               // CPU'lar soni
console.log("Bo‘sh RAM (MB):", os.freemem() / 1024 / 1024); // RAM bo‘sh joy (MB)
console.log("Umumiy RAM (MB):", os.totalmem() / 1024 / 1024); // RAM umumiy joy (MB)
console.log("Uzatish vaqti (uptime - soniya):", os.uptime());

    response.write('Hello World')
    response.end()

const fs = require('fs');

fs.readFile('./file/lorem.txt', 'utf8', (err, data) => {
    if ( err) throw err;
    console.log(data);
    
})

const fs = require('fs');

fs.readFile('./file/lorem.txt', (err, data) => {
    if ( err) throw err;
    console.log(data.toString());
    
})

const fs = require("fs");
const path = require("path");

fs.readFile(
  path.join(__dirname, "files", "starter.txt"),
  "utf8",
  (err, data) => {
    if (err) throw err;
    console.log(data);
  }
);

console.log("Hello...");

fs.writeFile(
  path.join(__dirname, "files", "reply.txt"),
  "Nice to meet you.",
  (err) => {
    if (err) throw err;
    console.log("Write complete");

    fs.appendFile(
      path.join(__dirname, "files", "reply.txt"),
      "\n\nYes it is. ",
      (err) => {
        if (err) throw err;
        console.log("Append complete");

        fs.rename(
          path.join(__dirname, "files", "reply.txt"), path.join(__dirname, 'files', 'newReply.txt'),
          (err) => {
            if (err) throw err;
            console.log("Rename complete"); 
          }
        );
      }
    );
  }
);