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  2. File URI scheme - Wikipedia

    en.wikipedia.org/wiki/File_URI_scheme

    A valid file URI must therefore begin with either file:/path (no hostname), file:///path (empty hostname), or file://hostname/path. file://path (i.e. two slashes, without a hostname) is never correct, but is often used. Further slashes in path separate directory names in a hierarchical system of directories and subdirectories. In this usage ...

  3. Extended file attributes - Wikipedia

    en.wikipedia.org/wiki/Extended_file_attributes

    macOS supports listing, [18] getting, [19] setting, [20] and removing [21] extended attributes from files or directories using a Linux-like API. From the command line, these abilities are exposed through the xattr utility. [22] Since macOS 10.5, files originating from the web are marked with com.apple.quarantine via extended file attributes. [23]

  4. Certification path validation algorithm - Wikipedia

    en.wikipedia.org/wiki/Certification_path...

    The certification path validation algorithm is the algorithm which verifies that a given certificate path is valid under a given public key infrastructure (PKI). A path starts with the Subject certificate and proceeds through a number of intermediate certificates up to a trusted root certificate, typically issued by a trusted certificate ...

  5. Programming language - Wikipedia

    en.wikipedia.org/wiki/Programming_language

    This is an accepted version of this page This is the latest accepted revision, reviewed on 6 February 2025. Language for communicating instructions to a machine The source code for a computer program in C. The gray lines are comments that explain the program to humans. When compiled and run, it will give the output "Hello, world!". A programming language is a system of notation for writing ...

  6. Filename extension - Wikipedia

    en.wikipedia.org/wiki/Filename_extension

    The use of a filename extension in a command name appears occasionally, usually as a side effect of the command having been implemented as a script, e.g., for the Bourne shell or for Python, and the interpreter name being suffixed to the command name, a practice common on systems that rely on associations between filename extension and ...

  7. List of TCP and UDP port numbers - Wikipedia

    en.wikipedia.org/wiki/List_of_TCP_and_UDP_port...

    rmiactivation, Java remote method invocation (RMI) activation 1099: Yes: Assigned: rmiregistry, Java remote method invocation (RMI) registry 1100: Unofficial: SaltoSystems - Handshake for IP-Components 1112: Unofficial ESET virus updates [128] 1113: Assigned [note 2] [129] Yes [130] Licklider Transmission Protocol (LTP) delay tolerant ...

  8. Glossary of computer science - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_computer_science

    Also simply application or app. Computer software designed to perform a group of coordinated functions, tasks, or activities for the benefit of the user. Common examples of applications include word processors, spreadsheets, accounting applications, web browsers, media players, aeronautical flight simulators, console games, and photo editors. This contrasts with system software, which is ...

  9. Command pattern - Wikipedia

    en.wikipedia.org/wiki/Command_pattern

    A sample UML class and sequence diagram for the Command design pattern. [3]In the above UML class diagram, the Invoker class doesn't implement a request directly. Instead, Invoker refers to the Command interface to perform a request (command.execute()), which makes the Invoker independent of how the request is performed.