# --------------------------بسم الله الرحمن الرحیم  -------------------------- #

# Set Permissions Of Files and Folders #
## Below gives all permissions to everybody to all files and subdirectories:##
    $ sudo chmod -R a+rwx path
> path like: /home/www/
* for example folder home ...

## write mode : ##  

    $ sudo chmod 0777 path

## read mode : ##

    $ sudo chmod 0750 path

* The surprising permissions that are diagnosed by this mode are:
>
    111 => --xr-xrwx
    400 => rw--w----
    440 => rw-rwx---
    444 => rw-rwxr--
    551 => ---r--rwt
    600 => --x-wx--T
    640 => -w------T
    644 => -w----r-T
    660 => -w--w-r-T
    664 => -w--wx--T
    666 => -w--wx-wT
    700 => -w-rwxr-T
    711 => -wx---rwt
    750 => -wxr-xrwT
    751 => -wxr-xrwt
    751 => -wxr-xrwt
    755 => -wxrw--wt
    770 => r------wT
    771 => r------wt
    775 => r-----rwt
    777 => r----x--t

Of these, only 400 is remotely plausible.