This resource is intended as a general framework for working through problems with CGI scripts. It is not a complete guide to every problem that you may encounter, nor a tutorial on bug squashing. It is just the culmination of my experience debugging CGI scripts for ten years. This page seems to have had many different homes ... 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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