China DOS Union

A friend has a server. He asked me that he has a directory at d:\, and there are many subdirectories in d:\html, and there are many *.htm files in the subdirectories. How to use batch processing to change all *.htm to *.html. Please ask experts for guidance.

```
@echo off
for /f "delims=" %%i in ('dir/b/s *.htm^|find ".htm"') do echo "%%i" "%%il"
pause
```

Brother zh159, the previous plan of using dir followed by find still might find folder names ending with .htm because dir didn't filter out folders. Adding the parameter /a-d to dir can eliminate the need for find. Modify the demo code based on 2F as follows:

@echo off

for /f "delims=" %%i in ('dir /a-d /b/s d:\html\*.htm') do echo "%%i" "%%il"

pause

Thank you very much, moderator. Because my internet speed is slow, just now I thought I didn't post successfully and reposted it again, but just now I found it was duplicated. I'm sorry, I didn't intentionally spam. Please delete that post. Thank you.

```
@echo off
pushd d:\html
ren *.htm *.html 2>nul
for /r /d %%i in (*) do ren "%%i\*.htm" "%%i\*.html" 2>nul
popd
exit /b 0
```
Theoretically it works, not tested.