unix Permissions CHMOD calculation
Example
CHMOD Calculation
CHMOD is binary. _ / _ _ _ / _ _ _ / _ _ _ = _/4+2+1/4+2+1/4+2+1 = 777 = _/rwx/rwx/rwx = 777 Therefore _rwx = _/4+2+1 = 7
D / _ _ _ / _ _ _ / _ _ _ (‘D’ = directory, another use is L = Link)
So e.g. _rwxr_xr_x = _/rwx/rx/r_x = 755
