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  2. Working directory - Wikipedia

    en.wikipedia.org/wiki/Working_directory

    In most computer file systems, every directory has an entry (usually named ".") which points to the directory itself.In most DOS and UNIX command shells, as well as in the Microsoft Windows command line interpreters cmd.exe and Windows PowerShell, the working directory can be changed by using the CD or CHDIR commands.

  3. Comparison of operating systems - Wikipedia

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

    Windows (PowerShell) NOTE: Linux systems may vary by distribution which specific program, or even 'command' is called, via the POSIX alias function. For example, if you wanted to use the DOS dir to give you a directory listing with one detailed file listing per line you could use {{{1}}} (e.g. in a session configuration file).

  4. Oracle Internet Directory - Wikipedia

    en.wikipedia.org/wiki/Oracle_Internet_Directory

    In comparing Oracle Internet Directory with its competitors, Oracle Corporation stresses that it uses as its foundation an Oracle database; whereas many competing products (such as Oracle Directory Server Enterprise Edition and Novell eDirectory) do not rely on an enterprise-strength relational database, but instead on embedded database engines similar to Berkeley DB.

  5. pushd and popd - Wikipedia

    en.wikipedia.org/wiki/Pushd_and_popd

    The directory stack underlies the functions of these two commands. It is an array of paths stored as an environment variable in the CLI, which can be viewed using the command dirs in Unix or Get-Location -stack in PowerShell. The current working directory is always at the top of the stack.

  6. Polynomial hierarchy - Wikipedia

    en.wikipedia.org/wiki/Polynomial_hierarchy

    The union of the classes in the hierarchy is denoted PH. Classes within the hierarchy have complete problems (with respect to polynomial-time reductions) that ask if quantified Boolean formulae hold, for formulae with restrictions on the quantifier order. It is known that equality between classes on the same level or consecutive levels in the ...

  7. Directory (OpenVMS command) - Wikipedia

    en.wikipedia.org/wiki/Directory_(OpenVMS_command)

    In computer software, specifically the DCL command-line interface of the OpenVMS operating system, the DIRECTORY command (often abbreviated as DIR) is used to list the files inside a directory. [1] It is analogous to the DOS dir and Unix ls commands.

  8. Hard link - Wikipedia

    en.wikipedia.org/wiki/Hard_link

    In computing, a hard link is a directory entry (in a directory-based file system) that associates a name with a file.Thus, each file must have at least one hard link. Creating additional hard links for a file makes the contents of that file accessible via additional paths (i.e., via different names or in different directori

  9. Sun Java System Directory Server - Wikipedia

    en.wikipedia.org/wiki/Sun_Java_System_Directory...

    Sun Java System Directory Server became Sun Directory Server Enterprise Edition and is currently known as Oracle Directory Server Enterprise Edition . [ 2 ] The software was available free of charge for perpetual usage in individual, commercial, service provider, or research and instructional environments.