Strings manipulieren
@echo off & SETLOCAL ENABLEEXTENSIONS ENABLEDELAYEDEXPANSION SET STR=Test String SET STR call :tolower STR SET STR call :toupper STR set STR goto :EOF :: toupper & tolower; makes use of the fact that string :: replacement (via SET) is not case sensitive :toupper for %%L 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 %1=!%1:%%L=%%L! goto :EOF :tolower for %%L 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 %1=!%1:%%L=%%L! goto :EOF :EOF