In tip 6301, we determined if a string consisted of all alphabetic characters (A-Z / a-z).

If your string is all alphabetic, you can use IsUpperCase.bat or IsLowerCase.bat to determine if the string is exclusively upper or lower case.

The syntax for using these tools are:

call isuppercase string answer

or

call islowercase string answer

where string is the environment variable you wish to interrogate and answer is a call directed environment variable that will be set to a Y or a N.

IsUpperCase.bat contains:

@echo off                              setlocal                              set string=%1                              set string=%string:"=%                              if \{%2\}

\{\} @echo Syntax: IsUpperCase string answer&endlocal&goto :EOF @echo %string%|findStr "\[^ABCDEFGHIJKLMNOPQRSTUVWXYZ\]">nul endlocal set %2=N if %ERRORLEVEL% EQU 1 set %2=Y

IsLowerCase.bat contains:
@echo off                              setlocal                              set string=%1                              set string=%string:"=%                              if \{%2\}\{\} @echo Syntax: IsLowerCase string answer&endlocal&goto :EOF                              @echo %string%|findStr "\[^abcdefghijklmnopqrstuvwxyz\]">nul                              endlocal                              set %2=N                              if %ERRORLEVEL% EQU 1 set %2=Y