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Bash, short for Bourne-Again SHell, is a shell program and command language supported by the Free Software Foundation [7] and first developed for the GNU Project [8] by Brian Fox. [9] Designed as a 100% [ 10 ] free software alternative for the Bourne shell , [ 11 ] [ 12 ] [ 13 ] it was initially released in 1989. [ 14 ]
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.
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 shell scripts .
On Unix-like systems, Secure Shell protocol (SSH) is usually used for text-based shells, while SSH tunneling can be used for X Window System–based graphical user interfaces (GUIs). 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 ...
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 text.
Unix shells, including Bash (the default shell in most Linux distributions) and ksh among many others, have a long-standing tradition of advanced and customizable completion capabilities. [ 3 ] Bash programmable completion, complete and compgen commands [ 4 ] have been available since the beta version of 2.04 [ 3 ] in 2000 [ 5 ] and offers at ...
Therefore, shell builtins are usually used for simple, almost trivial, functions, such as text output. Because of the nature of some operating systems, some functions of the systems must necessarily be implemented as shell builtins. The most notable example is the cd command, which changes the working directory of the shell.
Screenshot of a sample Bash session in GNOME Terminal 3, Fedora 15 Screenshot of Windows PowerShell 1.0, running on Windows Vista. A command-line interface (CLI) is a means of interacting with a computer program by inputting lines of text called command lines.