China DOS Union

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How can I change all files in d: with the exe extension to files with the ex extension?

I'm a newbie, hope all you experts can give me some pointers. Thanks

What I mean is all exe files on drive D. Including those in subfolders.

Thanks. Thanks to the friend in post #4. Also thanks to the friend in post #2.

%%~ni
I just started learning DOS and want to ask what this means! I can't understand this line!

Expand variable i to the file name..

Is there such an extension?

Unless absolutely necessary, it's best not to use things like delims and dir to parse screen output. First, the efficiency is relatively low; second, it's easy to make mistakes. The key to the OP's problem is just using the FOR /R parameter:
The following is enough: (actually, the use of delims and dir is unnecessary)
C:>for /r d: %a in (*.exe) do if exist %a rename %a %~na.ex

[ Last edited by GOTOmsdos on 2007-1-15 at 10:54 AM ]

Friend in post #9, your method still doesn't work. I tried it.

Originally posted by 86763510 at 2007-3-25 06:56 AM:
Friend in post #9, your method still doesn't work. I tried it.

I tried it, it does work. If you use it in a batch file, you need to change % to %%