How to Change File Permissions to 777 in Ubuntu

chmod 777 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.. chmod -R 777 store. The -R (or --recursive) options make it recursive. Or if you want to make all the files in the current directory have all permissions type: chmod -R

hugo777, The command chmod.