Hi,

I try to catch the empty string present in for loop but somehow it never does the job... Basically i try to search sth thats not existed and i put a "" around that variable which suppose to give "". But somehow it still doesn't work.

-------------my script below---------
::@echo off
setlocal disabledelayedexpansion
for /f "tokens=2 delims=##" %%A IN ('vol b: c: e: 2^>NUL') do (

SET myvar=%%A
echo %%A
if /I "%myvar%" EQU "" (
echo "None of backup hard disk is detected!!"
call cscript mail_err.vbs >NUL
)
)

endlocal
-------------i got the following result------

C:\batch\dumping>setlocal disabledelayedexpansion

C:\batch\dumping>for /F "tokens=2 delims=##" %A IN ('vol b: c: e: 2>NUL') do (
SET myvar=%A
echo %A
if /I "%%A" EQU "" (
echo "None of backup hard disk is detected!!"
call cscript mail_err.vbs 1>NUL
)
)

C:\batch\dumping>endlocal
-----
i tried if /i ... or just if ... which give me no different result.

Can anyone please give me some hint?

thank in advance
Dav