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shell

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shell

A shell is a program that acts as an interface between a [] and the operating system kernel of a computer. Command line shells allow the user to issue commands at a prompt by typing in commands with the keyboard. Graphical shells (such as Microsoft Windows) give users a graphical user interface (GUI) to give commands to the operating system by using a mouse or other input device to manipulate icons, menus, windows, and other graphical elements.

Popular shells

• bash (Bourne Again Shell - Linux/cygwin)
• sh (Bourne Shell - UNIX)
• ksh (Korn Shell - UNIX)
• csh (C Shell - UNIX)
• MSDOS (Microsoft DOS)
• explorer (Windows desktop)

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