How can I chmod 777 all subfolders of var?

chmod 777 chmod 777 makes a filefolder readable, write-able and executable by everyone. So essentially on your site folder, you have given everyone permission to write to that folder, so you have. I'm trying to change the permissions of temp_dir to 777. Why are these commands not accomplishing that? I'm using Linux by the way.

pc777, Start by setting permission numbers to 777 to grant files more access, then use the chmod command to modify specific permissions for each folder in var..