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  2. errno.h - Wikipedia

    en.wikipedia.org/wiki/Errno.h

    errno.h is a header file in the standard library of the C programming ... library functions when they detect errors. At program startup, the value stored is zero ...

  3. List of FTP server return codes - Wikipedia

    en.wikipedia.org/wiki/List_of_FTP_server_return...

    Command protection level denied for policy reasons. 534: Request denied for policy reasons. 535: Failed security check. 536: Data protection level not supported by security mechanism. 537: Command protection level not supported by security mechanism. 550: Requested action not taken. File unavailable (e.g., file not found, no access). 551 ...

  4. List of HTTP status codes - Wikipedia

    en.wikipedia.org/wiki/List_of_HTTP_status_codes

    Standard response for successful HTTP requests. The actual response will depend on the request method used. In a GET request, the response will contain an entity corresponding to the requested resource. In a POST request, the response will contain an entity describing or containing the result of the action. 201 Created

  5. PurifyPlus - Wikipedia

    en.wikipedia.org/wiki/PurifyPlus

    The ability to detect non-fatal errors is a major distinction between PurifyPlus and similar programs from the usual debuggers.By contrast, debuggers generally only allow the programmer to quickly find the sources of fatal errors, such as a program crash due to dereferencing a null pointer, but do not help to detect the non-fatal memory errors.

  6. Advanced Programming in the Unix Environment - Wikipedia

    en.wikipedia.org/wiki/Advanced_Programming_in...

    The book illustrates UNIX application programming in the C programming language. The first edition of the book was published by Addison-Wesley in 1992. It covered programming for the two popular families of the Unix operating system, the Berkeley Software Distribution (in particular 4.3 BSD and 386BSD) and AT&T's UNIX System V (particularly SVR4).

  7. Unreachable code - Wikipedia

    en.wikipedia.org/wiki/Unreachable_code

    In computer programming, unreachable code is part of the source code of a program which can never be executed because there exists no control flow path to the code from the rest of the program. [ 1 ] Unreachable code is sometimes also called dead code , [ 2 ] [ 3 ] although dead code may also refer to code that is executed but has no effect on ...

  8. Why did I receive an email from MAILER-DAEMON? - AOL Help

    help.aol.com/articles/what-is-a-mailer-daemon...

    When you get a message from a "MAILER-DAEMON" or a "Mail Delivery Subsystem" with a subject similar to "Failed Delivery," this means that an email you sent was undeliverable and has been bounced back to you.

  9. Adaptive Communication Environment - Wikipedia

    en.wikipedia.org/wiki/Adaptive_Communication...

    The Adaptive Communication Environment (ACE) is an open source software framework used for network programming. It provides a set of object-oriented C++ classes designed to help address the inherent complexities and challenges in network programming by preventing common errors.