On Thu, 2007-02-08 at 16:38 +0800, edwardspl@xxxxxxxxxx wrote: > But I want to know what no of g+rwx The RWX bits are binary flags in most significant order. Some examples: RWX = 111 (binary) RW- = 110 (binary) The least-significant bit (rightmost) is worth one, the middle is worth 2, the most significant bit is worth four. Some examples: RWX = 4 + 2 + 1 = 7 (decimal) R-X = 4 + 0 + 1 = 6 (decimal) R-- = 4 + 0 + 0 = 4 (decimal) Since we're only counting up as far as 7, you can use those numbers directly as octal. From 0 to 7, octal, hexadecimal, and decimal numbers are all represented by the same symbols. As above with RWX=7 and R=4, u=RWX, g=RWX o=R-- (user, group, others) = 0774 (octal, with a leading zero to indicate that it is octal) -- (This PC runs FC4, my others FC5 & FC6, in case that's important to the thread) Don't send private replies to my address, the mailbox is ignored. I read messages from the public lists.