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An operating system software user interface, whose primary purpose is to launch other programs and control their interactions; the user's command interpreter. Shell is a way to separate the internal complexity of the implementation of the command from the user. The internals can change while the user experience/interface remains the same.
「Bash」という名前は、「Bourne-again shell」の頭字語であり、これはStephen Bourneによって設計された初期のUnixシェルである「Bourne shell」の名前と、キリスト教の「生まれ変わり」という概念をかけた言葉遊びです。














