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

Use:

sudo chmod 755 -R /whatever/your/directory/is

However, be careful with that. It can really hurt you if you change the permissions of the wrong files/folders.