Windows cmd Batch changes the file name to lowercase

Directly on the code:

@EchoOffsetlocalsetlocalEnabledelayedexpansionSetPath= "C:\Users\llq\Desktop\test"Setsuf= "*.doc"rem%path% #使用变量 for/F "delims="%%i inch(‘dir/b/s/a-d%path%\%suf%‘) Do(SetH= "%%~Ni for %%j inch(a b c d e F g h i j k l m n o p q R S t u v w x y z) Do SetH= "!h:%%j=%%j!"Ren"%%i" "!h!"%suf%)endlocal

Note:
About the syntax in the code, do not understand can see my other cmd command syntax, or directly see the help of CMD.

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Windows cmd Batch changes the file name to lowercase