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  2. Fork bomb - Wikipedia

    en.wikipedia.org/wiki/Fork_bomb

    Fork bombs operate both by consuming CPU time in the process of forking, and by saturating the operating system's process table. [2] [3] A basic implementation of a fork bomb is an infinite loop that repeatedly launches new copies of itself. In Unix-like operating systems, fork bombs are generally written to use the fork system call. [3]

  3. List of POSIX commands - Wikipedia

    en.wikipedia.org/wiki/List_of_POSIX_commands

    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 ...

  4. Named pipe - Wikipedia

    en.wikipedia.org/wiki/Named_pipe

    Named pipe. In computing, a named pipe (also known as a FIFO for its behavior) is an extension to the traditional pipe concept on Unix and Unix-like systems, and is one of the methods of inter-process communication (IPC). The concept is also found in OS/2 and Microsoft Windows, although the semantics differ substantially.

  5. Comparison of command shells - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_command_shells

    JP Software command-line processors provide user-configurable colorization of file and directory names in directory listings based on their file extension and/or attributes through an optionally defined %COLORDIR% environment variable. For the Unix/Linux shells, this is a feature of the ls command and the terminal.

  6. glob (programming) - Wikipedia

    en.wikipedia.org/wiki/Glob_(programming)

    glob (programming) In computer programming, glob ( / ɡlɒb /) patterns specify sets of filenames with wildcard characters. For example, the Unix Bash shell command mv *.txt textfiles/ moves all files with names ending in .txt from the current directory to the directory textfiles. Here, * is a wildcard and *.txt is a glob pattern.

  7. List of programming languages by type - Wikipedia

    en.wikipedia.org/wiki/List_of_programming...

    Expect (a Unix automation and test tool) fish (a Unix shell) Hamilton C shell (a C shell for Windows) ksh (a standard Unix shell, written by David Korn) PowerShell (.NET-based CLI) rc (shell for Plan 9) Rexx; sh (standard Unix shell, by Stephen R. Bourne) TACL (Tandem Advanced Command Language) Windows batch language (input for COMMAND.COM or ...

  8. 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.

  9. DB2 SQL return codes - Wikipedia

    en.wikipedia.org/wiki/DB2_SQL_return_codes

    table table-name does not have an index to enforce the uniqueness of the primary or unique key -625: warning: the definition of table has been changed to incomplete -626: the alter statement is not executable because the page set is not stopped -627: the alter statement is invalid because the table space or index has user-managed data sets -628