这些批处理命令的含义是什么？

Question

I just want to know the meaning of this instructions in detail:

"%0\\ \n cd %0\\.. \n cd /d %0\\.. \n mup.exe"

I searched about it but I didn't find anything. in my program a method is called which makes a batch file in the path of the 'programmer TNM' installation:

createbatchFile(new File(batchFile));

the implementation of the method is:

private void createbatchFile(File file) throws IOException, Exception{

    if(file.exists())
      file.delete();
    File f = new File(file.getPath(),file.getName());
    f.deleteOnExit();

    char[] cmd = "%0\\ \n cd %0\\.. \n cd /d %0\\.. \n mup.exe".toCharArray();
    writeToFile(cmd , file);
    return;
 }

And the above code makes a

Answer 1

First of all, that's not batch. Well, it's sort of batch. It's batch as written by some other language; you can tell because batch doesn't use \\ as its escape characters, and it wouldn't know what to do with the \\n character. This appears to be some language creating a batch file, but without more code it's hard to tell.

%0 is the command line argument for the script itself.
\\\\ will write a literal \\ to the output file
\\n is a newline character
cd %0\\\\.. would move to the parent directory of the current directory... if %0 was a valid directory path. But as I said before, %0 is the script itself, and that's saying cd script.bat\\.. which won't do anything
cd /d %0\\\\.. is the same thing, but with the /d option, which allows for cd to move between drives, like from C: to D:. But again, this won't actually do anything because the syntax is incorrect.
mup.exe runs mup.exe - not sure what this is, but it's what gets run

Answer 2

%0 in batch files is the name of the script itself if SHIFT command is not used. As in your example theres %0\\\\ I suppose there's a created directory named after the batch and this is a command passed to another command.

%0\\\\.. should mean the upper directory.

Without sharing more your code no more can be said.