I understand your concern. We will update the document as well.
As it was module-2 and student who followed the steps from beginning already install and configure Cloudera VM.
Where they can practise these commands.
Hope this help.
These commands can be practiced using a Terminal Session from either of your Virtual Box / Virtual Machine or from Putty session. I practiced these from putty.
Thank you both for your help! I will review this as soon as I can to see if it is clear to me in how to execute.