cmd.exe echo %~x1
%* return the remainder of the command line starting at the first command line argument (in Windows NT 4, %* also includes all leading spaces)
%~dn return the drive letter of %n (n can range from 0 to 9) if %n is a valid path or file name (no UNC)
%~pn return the directory of %n if %n is a valid path or file name (no UNC)
%~nn return the file name only of %n if %n is a valid file name
%~xn return the file extension only of %n if %n is a valid file name
%~fn return the fully qualified path of %n if %n is a valid file name or directory