help cp man cp cp ?
1.2 How do you list all the files that are in the current directory?
list all ls -full ls -a
1.3 How do you rename file "new" in file "old"?
mv new old cp new old rn new old
1.4 How do you visualize the content of file "not_empty"?
type not_empty cat not_empty more not_empty
1.5 How do you create a new directory called "flower"?
newdir flower mkdir flower crdir flower