cp

Lets make another file in this directory. Instead of using touch, we're gonna use cp to copy my_file and create a duplicate.

cp takes two arguments, like so: cp <file_to_be_coped> <file_to_be_created>

Let's create a copy of our my_file called my_file_duplicate

$ cp my_file my_file_duplicate

And if we ls, we'll see both files in our directory.