$4\mathrm{.}14$ Test running an external command inside vi by doing the following:

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A$.$ Open the file exCommands

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B$.$ Ensure that you're in Command Mode

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C$.$ Inspect the file to see the order of the lines

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D$.$ Type$$ :$\%!$sort

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E$.$ Inspect the file to see the order of the lines.$$ Has the order changed?

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F$.$ Type$$ :$\%!$cat $$n$($The $$n option tells cat to add line numbers to the each line being sent to stdout.$)$

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G$.$ Inspect the file.$$ Has a line number been added to each line? Create a screenshot showing the file after it has been sorted and the line numbers added.