How to change permissions for a folder and its subfolders/files in one step?

Question

I would like to change permissions of a folder and all its sub folders and files in one step (command) in Linux.

I have already tried the below command but it works

Answer 1

It's very simple.

In Terminal go to file manager. example: sudo nemo. Go /opt/ then click Properties → Permission. and then Other. Finally, change to create and delete and file acess to read and write and click on button apply... And work.