China DOS Union

mode con lines=15 cols=40
set /p str=Please enter the QQ number for which you want to extract the password:
for /f "delims=- tokens=1*" %%i in (Z:\QQ\9QQ.txt) do if %%i==%str% echo The password you want to extract is: %%j
echo ========Marked as sold
@ECHO %dbg% OFF
setlocal ENABLEDELAYEDEXPANSION

FOR /F %%i in (Z:\QQ\9QQ.txt) do (

SET STR=%%i
SET STR=!STR:%str%=%str%已卖出!
ECHO !STR!>>Z:\QQ\已卖9QQ.txt
)
Why does this generate all the contents of 9QQ.txt in "已卖9QQ.txt" after entering?
How to modify it so that only the line where %str% is entered is output in "已卖9QQ.txt"!
Please help, brothers ~~~

[ Last edited by chainliq on 2007-1-11 at 05:55 AM ]

Hey, urgent need, which brother can give a hint~

Everyone, give me a hint ah``````````I I I`````````

Why has it been closed without stating the solution to let everyone learn?

echo [on | off]
echo [message]
echo.
echo message > [driver:] [path] filename
@
//////////////////////////////////////////
Description
on | off
If set to ON, the command being executed will be displayed on the screen when the batch file is executed. If set to OFF, the command being executed will not be displayed on the screen when executed. If neither ON nor OFF is omitted, the current status of the ECHO command will be displayed

MESSAGE
is the information that will be displayed on the screen. Using the ECHO. command will leave a blank line on the screen.
>[drive:] [path] filename
Performs output redirection, and >[drive:] [path] filename specifies the location and filename of the storage file
@ In the batch file, the command after @ will not be displayed on the screen