Diff: Shell

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+Referring to a [Shell] when using computers generally means that the user is talking about accessing the computers operating system, via its interpreter. 

+ 

+Consider a shell to be a ''container'' that provides the '' tools'' to ''control'' the ''Operating System'' . 

+ 

+A [Shell] may be: 

+* run in a local console (terminal) or a remote console (terminal). 

+* interactive (user input) or non-interactive (controlled by another program).