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Issue description

 Description:  RHSA1 page 64: guided exercise: kill processes: suggestion to show multiple variations of how to kill the processes in the text. currently only shows the most verbose way to kill the processes, whereas "killall instance" and "killall tail" are faster and just as accurate, and in this case don't kill any unintended processes because in the previous step you run a grep command (e.g. for tail) to verify there is only 1 tail process running 

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