Examine methods for reporting on e-mail usage and getting detailed statistics on mailbox use. E-mail logs can provide a wealth of information about your users and their e-mail habits, including how often and frequently they use their e-mail. Depending on your UNIX® systems, you might even be able to glean more detailed information, such as identifying which users are using their folders effectively and who could benefit from further training and advice.read more on IBM developers.
Traditionally, Unix/Linux/POSIX filenames can be almost any sequence of bytes, and their meaning is unassigned. The only real rules are that "/" is always the directory separator, and that filenames can't contain byte 0 (because this is the terminator). Although this is flexible, this creates many unnecessary problems. In particular, this lack of limitations makes it unnecessarily difficult to write correct programs (enabling many security flaws), makes it impossible to consistently and accurately display filenames, causes portability problems, and confuses users. more ....
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