Conversation so far:
how many links are created for sim directory after mkdir sim command is executed?
Normal usage is as follows: mkdir name_of_directory. multiple directories can be specified, and mkdir will try to create all of them.
which operating systems use the mkdir command?
Unix and Unix-like, DOS, FlexOS, OS/2, Windows, ReactOS, KolibriOS
does the mkdir command have options?
-p: parents or path, will also create all directories leading up to the given directory that do not exist already.
what is an example of the -p option for the mkdir command?
mkdir -p a/b will create directory a if it doesn't exist, then will create directory b inside directory a. If the given directory already exists, ignore the error.

Question: any other options?
Self-contained rewrite: any other options for the mkdir command?