Create a directory called linux in your home directory. What command line did you use? What command would you use to create the directories called memos and personal in your home directory?

What will be an ideal response?

I used the mkdir ~/linux command. You can also use the mkdir $HOME/linux command. Or, use the following sequence of commands to accomplish the same.
$ cd
$ mkdir linux
$
You can use the mkdir ~/memos ~/personal command to create the memos and personal directories in my home directory.