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The content in 1.txt is: 123123

The content in 1.bat is:
type 1.txt |find "123123"
echo %ERRORLEVEL%
echo.type 1.txt |find "123123"
echo %ERRORLEVEL%

The result returns 0 and 1, why not 0 and 0??

What is the purpose of the building "echo.type 1.txt"?

I'm not sure what you're up to, but the execution of echo.type 1.txt |find "123123" is wrong, so it returns "1"
type 1.txt |find "123123"
echo %ERRORLEVEL%
echo "type 1.txt |find "123123""
echo %ERRORLEVEL%
pause

Thanks! Now it's okay.

I want to use HOST to block URLs (block those that pop up a lot of ads when opening a web page)

set list1=.\Website.txt 'Inside are ad URLs
set list2=%windir%\system32\drivers\etc\hosts

for /f "tokens=1,2 delims==" %%i in (%list1%) do (
set Website=%%i
type !list2! |find "!Website!" 1>2>nul
if !ERRORLEVEL! neq 0 (
echo.127.0.0.1 !Website!>>!list2!)
)

Originally posted by Hanyeguxing at 2010-12-11 18:52:
What is the purpose of the building "echo.type 1.txt"?

Thank you! It's okay now.

I want to use HOST to block URLs (block those annoying ads that pop up as soon as you open a web page)

set list1=.\Website.txt 'Inside are the URLs of ads
set list2=%windir%\system32\drivers\etc\hosts

for /f "tokens=1,2 delims==" %%i in (%list1%) do (
set Website=%%i
type !list2! |find "!Website!" 1>2>nul
if !ERRORLEVEL! neq 0 (
echo.127.0.0.1 !Website!>>!list2!)
)

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