> I feel the need to learn something new today. How could the > user replace > the root owned files in a directory that they own? > Suppose the root-owned file (readable for non-root user) is a. Then one does 'cp a b; rm a; mv b a' and we have the same file a owned by the regular user. Key observation here is that the non-root user ownes the directory, hence can remove files. HTH Dan