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  2. List of POSIX commands - Wikipedia

    en.wikipedia.org/wiki/List_of_POSIX_commands

    This is a list of POSIX (Portable Operating System Interface) commands as specified by IEEE Std 1003.1-2024, which is part of the Single UNIX Specification (SUS). These commands can be found on Unix operating systems and most Unix-like operating systems. This is not a comprehensive list of all utilities that existed in the various historic Unix ...

  3. Unix - Wikipedia

    en.wikipedia.org/wiki/Unix

    Unix ( / ˈjuːnɪks / ⓘ, YOO-niks; trademarked as UNIX) is a family of multitasking, multi-user computer operating systems that derive from the original AT&T Unix, whose development started in 1969 [ 1] at the Bell Labs research center by Ken Thompson, Dennis Ritchie, and others.

  4. Comparison of command shells - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_command_shells

    Comparison of command shells. Further information: Shell (computing) Bash, the default shell on many GNU/Linux systems. A command shell is a command-line interface to interact with and manipulate a computer's operating system .

  5. Database trigger - Wikipedia

    en.wikipedia.org/wiki/Database_trigger

    Database trigger. A database trigger is procedural code that is automatically executed in response to certain events on a particular table or view in a database. The trigger is mostly used for maintaining the integrity of the information on the database. For example, when a new record (representing a new worker) is added to the employees table ...

  6. SingleStore - Wikipedia

    en.wikipedia.org/wiki/SingleStore

    SingleStore (formerly MemSQL) is a proprietary, cloud-native database designed for data-intensive applications. [ 2] A distributed, relational, SQL database management system [ 3] (RDBMS) that features ANSI SQL support, it is known for speed in data ingest, transaction processing, and query processing. [ 4][ 2] SingleStore primarily stores ...

  7. Operating system - Wikipedia

    en.wikipedia.org/wiki/Operating_system

    An operating system ( OS) is system software that manages computer hardware and software resources, and provides common services for computer programs . Time-sharing operating systems schedule tasks for efficient use of the system and may also include accounting software for cost allocation of processor time, mass storage, peripherals, and ...

  8. Comparison of operating systems - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_operating...

    These tables provide a comparison of operating systems, of computer devices, as listing general and technical information for a number of widely used and currently available PC or handheld (including smartphone and tablet computer) operating systems. The article "Usage share of operating systems" provides a broader, and more general, comparison ...

  9. Page table - Wikipedia

    en.wikipedia.org/wiki/Page_table

    A page table is a data structure used by a virtual memory system in a computer to store mappings between virtual addresses and physical addresses. Virtual addresses are used by the program executed by the accessing process, while physical addresses are used by the hardware, or more specifically, by the random-access memory (RAM) subsystem.