[javascript] Renaming files using node.js

I am quite new in using JS, so I will try to be as specific as I can :)

• I have a folder with 260 .png files with different country names: Afghanistan.png, Albania.png, Algeria.png, etc.

• I have a .json file with a piece of code with all the ISO codes for each country like this:

{  
  "AF" : "Afghanistan",  
  "AL" : "Albania",  
  "DZ" : "Algeria",  
  ...  
}

• I would like to rename the .png files with their ISO name in low-case. That means I would like to have the following input in my folder with all the .png images: af.png, al.png, dz.png, etc.

I was trying to research by myself how to do this with node.js, but I am a little lost here and I would appreciate some clues a lot.

Thanks in advance!

For linux/unix OS, you can use the shell syntax

const shell = require('child_process').execSync ; 

const currentPath= `/path/to/name.png`;
const newPath= `/path/to/another_name.png`;

shell(`mv ${currentPath} ${newPath}`);

That's it!

For synchronous renaming use fs.renameSync

fs.renameSync('/path/to/Afghanistan.png', '/path/to/AF.png');

1. fs.readdir(path, callback)
2. fs.rename(old,new,callback)

Go through http://nodejs.org/api/fs.html

One important thing - you can use sync functions also. (It will work like C program)