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2. Shell script - Wikipedia

   en.wikipedia.org/wiki/Shell_script

   Editing a FreeBSD shell script for configuring ipfirewall. A shell script is a computer program designed to be run by a Unix shell, a command-line interpreter. [1] The various dialects of shell scripts are considered to be command languages. Typical operations performed by shell scripts include file manipulation, program execution, and printing ...

3. Bash (Unix shell) - Wikipedia

   en.wikipedia.org/wiki/Bash_(Unix_shell)

   In Linux, if the script was executed by a regular user, the shell would attempt to execute the command rm -rf / as a regular user, and the command would fail. However, if the script was executed by the root user, then the command would likely succeed and the filesystem would be erased.

4. Unix shell - Wikipedia

   en.wikipedia.org/wiki/Unix_shell

   tcsh and sh shell windows on a Mac OS X Leopard [1] desktop. A Unix shell is a command-line interpreter or shell that provides a command line user interface for Unix-like operating systems. The shell is both an interactive command language and a scripting language, and is used by the operating system to control the execution of the system using ...

5. Shell (computing) - Wikipedia

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

   Conversely, some programming languages can be used interactively from an operating system shell or in a purpose-built program. Several command-line shells, such as Nushell , Xonsh, Bash (Unix shell) , and Z shell , offer command-line completion , enabling the interpreter to expand commands based on a few characters input by the user.

6. Z shell - Wikipedia

   en.wikipedia.org/wiki/Z_shell

   The Z shell (Zsh) is a Unix shell that can be used as an interactive login shell and as a command interpreter for shell scripting. Zsh is an extended Bourne shell with many improvements, including some features of Bash, ksh, and tcsh. Zsh was created by Paul Falstad in 1990 while he was a student at Princeton University.

7. Comparison of command shells - Wikipedia

   en.wikipedia.org/wiki/Comparison_of_command_shells

   A shell script (or job) can report progress of long running tasks to the interactive user. Unix/Linux systems may offer other tools support using progress indicators from scripts or as standalone-commands, such as the program "pv". [52] These are not integrated features of the shells, however.

8. List of command-line interpreters - Wikipedia

   en.wikipedia.org/wiki/List_of_command-line...

   There are many variants of Unix shell: Bourne shell sh. Almquist shell (ash) Debian Almquist shell (dash) Bash (Unix shell) bash; KornShell ksh. Z shell zsh; C shell csh. TENEX C shell tcsh; Ch shell ch; Emacs shell eshell; Friendly interactive shell fish; PowerShell pwsh; rc shell rc, a shell for Plan 9 from Bell Labs and Unix; Stand-alone ...

9. Command-line interface - Wikipedia

   en.wikipedia.org/wiki/Command-line_interface

   FreeBSD uses tcsh as its default interactive shell for the superuser, and ash as default scripting shell. Many Linux distributions have the Bash implementation of the Unix shell. Apple macOS and some Linux distributions use zsh. Previously, macOS used tcsh and Bash.