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http://www.unix.com – Hi, I have noticed that on my Linux box there is a nice feature which make it impossible for specified member (owner, group or other) to have an given access if a member from which we would expect it more don't have that access. So it is impossible to read file by all if others have set read bit but owner or group doesn't have. But I haven't found that the above feature is guaranteed by any standard. So is it on which really I can rely on? By the way: I have observed that even experienced users has sometimes problems when asked if a given structure of permissions will give a specified membe (HowTos)