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....
What is Perl? Perl is Practical Extraction and Report Language. is used often to create interactive web pages, Perl is full programming language like C# and Java, to learn some of this language i uploaded a book which is free to use under the terms of GNU free documentation license!
Comments