The Linux command mkdir (make directory/make directories) can be used to create new directories.
Creating directories in the current working directory
The most basic usage of mkdir is the following:
This will create a new directory with the given name in the current directory. Therefore, if your username is “me” and in the terminal you are using you are currently in your home folder (/home/me) then running the command
will create a the directory /home/me/backup.