To easily work with directories and files on server, use the fs-extra module.
It can be a drop in replacement for "fs" build-in module.
- Before using the "fs-extra" module, you have to install it. To install "fs-extra", run this code in command line interface: 
npm install --save fs-extra
Then, you can use the fs-extra module in your Node.js projects, as a drop in replacement for native fs. 
const fs = require('fs-extra');

Moving directory

A simple way to move a directory in Node.js it is to use the fs.move(oldPath, newPath, callback) method of the fs-extra module.
- Example: move 'dir_2/' directory from 'test/' to 'dirx/': 
const fs = require('fs-extra');

fs.move('./test/dir_2/', './dirx/dir_2/', err => {
  if(err) return console.error(err);
  console.log('success!');
});

Copy directory

To copy a directory in Node.js, you can use the copy() method of the fs-extra module.
Example: Copy the 'dir_2/' directory from 'test/' to 'dirx/': 
const fs = require('fs-extra');

fs.copy('./test/dir_2/', './dirx/dir_2/', err =>{
  if(err) return console.error(err);
  console.log('success!');
});

Daily Test with Code Example

HTML
CSS
JavaScript
PHP-MySQL
Which HTML5 tag defines marked text? (can be used to highlight parts of text)
<mark> <embed> <span>
<p>Free corses: <mark>coursesweb.net</mark> for Web Development.</p>
Which CSS pseudo-class adds a style to an element when the mouse is over it?
:focus :hover :active
a:hover {
  font-weight: bold;
  color: #00da01;
}
Click on the function which returns a string value that represents the number rounded to the x digits after the decimal point.
toPrecision(x) toFixed(x) floor(x)
var num = 12.34567;
num = num.toFixed(2);
alert(num);       // 12.35
Indicate the PHP function which reads an entire file into an array.
[) file() readfile()
$arr = file("a_file.txt", FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);
var_export($arr);
Node.js Move and Copy Directory

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