Explain what does rm -rf . do? and the reason why we don’t recommend?

Question

Explain what does rm -rf . do? and the reason why we don’t recommend
you use it, in particular as a system administrator.

Answer 1

rm is a unix command for "Delete"
-r would be recursive, which means all the files in this folder, and all the files inside any folders in this folder, and so on. I forget what the -f switch does.

So the command rm -rf . could erase entire file systems, depending on your current working directory.