The name "shell" for a command line interpreter and the concept of making the shell a user program outside of the operating system kernel were introduced in Unix's precursor Multics.
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The Thompson shell syntax for redirection with < and >, and piping with "?title=DOS">DOS, OS/2 and Microsoft Windows.
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These features could not overcome the shortcomings of the Thompson shell, and so a new shell was written from scratch by Stephen Bourne.