How to remove a folder and all its content from the current directory?

You were looking for this command:

RMDIR [/S] [/Q] [drive:]path
RD [/S] [/Q] [drive:]path

    /S      Removes all directories and files in the specified directory
            in addition to the directory itself.  Used to remove a directory
            tree.

    /Q      Quiet mode, do not ask if ok to remove a directory tree with /S

In your case just use /S
,it will delete the whole directory tree by first asking the user if it should proceed, i.e.- displaying the following output to the screen:

"folderName, Are you sure (Y/N)?"

where folderName is the name of the folder (and its sub-folders) you wish to remove.

Tested on Windows 7, 64 bit.