今天在批處理文件中 %~d0 ，莫名其妙， 答案是：
he magic variables %n contains
the arguments used to invoke the file: %0 is
the path to the bat-file itself, %1 is
the first argument after, %2 is
the second and so on.
Since the arguments are often file paths, there is some additional syntax to extract parts of the path. ~dis
drive, ~p is
the path (without drive), ~n is
the file name. They can be combined so ~dp is
drive+path.
%~dp0 is
therefore pretty useful in a bat: it is the folder in which the executing bat file resides.
You can also get other kinds of meta info about the file: ~t is
the timestamp, ~z is
the size.
Look here for a reference for all command line commands. The tilde-magic codes are described underfor.
另外一網友補充
%~d0 gives
you the drive letter of argument 0 (the script name), %~p0 the
path.
參見網頁 http://stackoverflow.com/questions/112055/what-does-d0-mean-in-a-windows-batch-file