To create a new directory in a command-line interface, you can use the mkdir (make directory) command followed by the name of the directory you want to create.
For example, to create a new directory named new_folder, you would use:
mkdir new_folder
If you want to create the directory inside another directory, you can specify the path:
mkdir ~/project/new_folder
This will create new_folder inside the project directory. Let me know if you need more help!
