How to copy everything from one directory to another using 'cp' command?

Question

I know that we can copy things from one directory to another using the command:

cp -Ri /path/one/* /path/two/*

Here:
R = recursive
i = interactive

My questions:

1. Does this command copy everything? (Hidden folders & files, system folder & files, etc.)
2. If not, then what is the command? Or are there other softwares available for the job?

Answer 1

1. no

2. do not specify the files:

   cp -Ri /path/one/ /path/two/