How to forcibly delete files with cmd command?

If you want to delete the entire folder and all the contents of the folder
rd/s/q: \ A folder (so that all files and folders for the entire folder have been deleted)
For example, I want to delete the 123 folder of D drive and all the contents of the 123 folder.
rd/s/q d:\123 this removes the

If you only delete a file individually, use the
del/f/s/q drive letter: \ filename
For example, I want to delete the 789 notebook file from the 456 folder on D drive.
del/f/s/q D:\456\789.txt
When you delete a file, remember to add its suffix name.

How to forcibly delete files with cmd command?