NetBSD is an extremely flexible operating system that is designed to be portable across various architectures. This feature makes it attractive for embedded developers. In this article, I will demonstrate a process for creating a very small kernel that can boot, either to a shell prompt or to a login screen, more...
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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