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chgcase.exe Filename & directory case convertion. cdebrock.free.fr/ chgcase.exe [-u -l -c -d -f] directory1 directory* file1 file* -u: change to uppercase -l: change to lowercase -c: capitalize (first letter only: my file.ext -> My file.ext) -C: capitalize (all words: my file.ext -> My File.ext) -d: process directories only -f: process files only -v: verbose mode Wildcards are ok. Filters are applied in this order: u l c C. -d and -f are default (process files AND directories) ex.: chgcase -v -l -c -f * Lowercase then capitalize all files (not directories). chgcase -v -u -c -d * Uppercase then capitalize all directories (not files).
@echo off set SrcDir=C:\test\aa for %%a in ("%SrcDir%\*.*") do ( set "str=%%~nxa" setlocal enabledelayedexpansion for %%a in (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 ( set str=!str:%%a=%%a! ) ren "%%a" "!str!" )