Useful Raspbian Linux Commands

Return the octal file permission value for a file or directory

stat -c "%a %n" *
Replace * with the relevant directory or the exact filename that you want to examine.
From the man page of stat,

-c  --format=FORMAT
          use  the  specified  FORMAT instead of the default; output a newline after
          each use of FORMAT
%a     Access rights in octal
%n     File name

Usage:

With files:

$ stat -c "%a %n" ./Documents/Udev.html 
664 ./Documents/Udev.html

With folders:

$ stat -c "%a %n" ./Documents/
755 ./Documents/

Comments

Setting up NUT on a Raspberry Pi for Greencell USB UPS

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