Which Shell?

Which shell? Normally the programming language does not specify existence of any shells or others environmental tasks. What happens if the program is run as an OS driver, a system service, or without any OS at all on the bare board? Otherwise, how does this task differ from Execute a System Command? Does spawning a shell qualify? --Dmitry-kazakov 13:15, 26 August 2008 (UTC)

I guess we could restrict it to mean systems that have command line shells such as bash/tcsh/... on Unix systems, cmd.exe on Windows, or posix-like shells. Maybe we should state what shell the command line is compatible with? --Paddy3118 13:55, 26 August 2008 (UTC)
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