China DOS Union

I looked up for /?
%~fsI is to expand %I to the full path name containing only the short name.
Through experimentation
SET WL_HOME=C:\bea\weblogic91
FOR %%i IN ("%WL_HOME%") DO SET WL_HOME=%%~fsi
echo %WL_HOME%
pause
It shows WL_HOME=C:\bea\WEBLOG~1
I don't know how to explain the sentence "expand %I to the full path name containing only the short name"
Let's explain: In Windows, for a long file or directory name, there is a corresponding short name. For example, "weblogic91" has a short name "WEBLOG~1". When using %~fsI in a for loop, it takes the variable %I (here it's "%WL_HOME%") and expands it to the full path but using the short name part. So in the example, %WL_HOME% is "C:\bea\weblogic91", and when processed with %%~fsi, it becomes the full path with the short name part, so it's "C:\bea\WEBLOG~1".

What is the definition of the so-called short filename? C:\bea\weblogic91 How does it become C:\bea\WEBLOG~1?

What I "Baidu" for you:

When there are long file names on a disk or directory, since DOS can only recognize "8.3 format" files, it will take the first "6 letters" of the long file name plus "~1" to represent it. For example, "C:\Program Files" should be written as "C:\Progra~1". If there is another file named "Program Common", then the names will be like this: "C:\Program Common" should be written as "C:\Progra~1", "C:\Program Files" should be written as "C:\Progra~2", That is to say, it is written in alphabetical order.

Here's the translation:

Here's an example:

@echo off for %%i in (.) do @echo %%~si pause>nul
The above code is saved as a *.bat file. When run in any directory, you can see the short name of the current directory.

Thanks ccwan
Got it

Please clarify the specific context of these symbols in the batch processing you mentioned. Different symbols may have different specific uses in batch commands. For example, the caret (^) is often used as an escape character, the exclamation mark (!) may be related to delayed expansion in certain scenarios, the minus sign (-) may be used in range expressions, and the tilde (~) may have specific meanings in parameter substitution, etc. But without more detailed context, it's difficult to give an extremely accurate and detailed explanation.

Originally posted by xuzhenhui at 2007-1-12 14:53:
May I ask you all about the functions and usages of special symbols such as "＾　！　－１　～" in batch processing

　　DOS Symbol Issues

　　Go to the 4th floor of the above post to have a look, which will be helpful to you.

[ Last edited by lxmxn on 2007-1-12 at 02:57 PM ]