Berkeley Software Distribution (BSD) Interview Questions and Answers


You are told that the permissions of a file are 645. Quick, how do you calculate what it means?

The permissions value are always 4 for read, 2 for write, 1 for execute. The three numbers are always for owner, group, and everybody on the system. Therefore 645 means: owner - read and write, group - read only, everybody - read and execute. You�ll rarely see such a permission set, but for interview question it might just work.

Posted by:Richards