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  2. Comparison of command shells - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_command_shells

    PowerShell data sections can contain constants and expressions using a restricted subset of operators and commands. [79] PowerShell data sections are used when e.g. localized strings needs to be read from an external source while protecting against unwanted side effects.

  3. Command substitution - Wikipedia

    en.wikipedia.org/wiki/Command_substitution

    In computing, command substitution is a facility that allows a command to be run and its output to be pasted back on the command line as arguments to another command. . Command substitution first appeared in the Bourne shell, [1] introduced with Version 7 Unix in 1979, and has remained a characteristic of all later Uni

  4. PowerShell - Wikipedia

    en.wikipedia.org/wiki/PowerShell

    PowerShell is a task automation and configuration management program from Microsoft, consisting of a command-line shell and the associated scripting language.Initially a Windows component only, known as Windows PowerShell, it was made open-source and cross-platform on August 18, 2016, with the introduction of PowerShell Core. [5]

  5. Command-line interface - Wikipedia

    en.wikipedia.org/wiki/Command-line_interface

    The > in the third example is a redirection operator, telling the command-line interpreter to send the output of the command not to its own standard output (the screen) but to the named file. This will overwrite the file. Using >> will redirect the output and append it to the file.

  6. Redirection (computing) - Wikipedia

    en.wikipedia.org/wiki/Redirection_(computing)

    In computing, redirection is a form of interprocess communication, and is a function common to most command-line interpreters, including the various Unix shells that can redirect standard streams to user-specified locations. The concept of redirection is quite old, dating back to the earliest operating systems (OS).

  7. Shell (computing) - Wikipedia

    en.wikipedia.org/wiki/Shell_(computing)

    On Microsoft Windows, Remote Desktop Protocol can be used to provide GUI remote access, and since Windows Vista, PowerShell Remote can be used for text-based remote access via WMI, RPC, and WS-Management. [4] Most operating system shells fall into one of two categories – command-line and graphical.

  8. Qshell - Wikipedia

    en.wikipedia.org/wiki/Qshell

    Qshell does not support the <> redirection operator or provide a command history. It also has no job control support as IBM i operating system does not have the concept of a foreground or background process group. The POSIX standard fg and bg built-in commands are therefore not available as well. [3]

  9. Process substitution - Wikipedia

    en.wikipedia.org/wiki/Process_substitution

    Process substitution can also be used to capture output that would normally go to a file, and redirect it to the input of a process. The Bash syntax for writing to a process is >(command). Here is an example using the tee, wc and gzip commands that counts the lines in a file with wc -l and compresses it with gzip in one pass: