China DOS Union

Hello everyone! Please help take a look at how this should be written.
A.TXT contents
QQ Speed
QQ Island
QQ Fengshenji
QQ Huaxia
Baby Tank
Snowstorm Love Sky
...........

B.TXT contents
QQ Island
QQ Speed
Speed
Baby Tank
Baby

The contents of A.TXT are the standard. For each line in B.TXT, if it is different from A.TXT, find it and put it into C.TXT (for example, Speed and Baby)

[ Last edited by lbccyxs on 2010-7-29 at 10:51 ]

@echo off
:: Extract the differences between the two files into some file
::
cd.>3.txt
for /f "tokens=1* delims=:" %%i in ('findstr /n . 1.txt') do (
for /f "tokens=1* delims=:" %%x in ('findstr /n . 2.txt') do (
if %%i equ %%x if not "%%j"=="%%y" (>>3.txt echo 1:%%j&>>3.txt echo 2:%%y&>>3.txt echo.)
)
)




------------------------
http://www.jb51.net/list/list_106_2.htm

This one is relatively slow (mainly because there are a lot of games), but it can meet the requirement. The purpose is to delete expired games.
cd.>c.bat
for /f "tokens=*" %%i in (a.txt) do (
find "%%i" b.txt || >>c.bat echo RD /S/Q K:\网络游戏\%%i)
del 1.txt&del a.txt&del b.txt
notepad c.bat

[ Last edited by lbccyxs on 2010-8-3 at 22:32 ]

Wouldn't a single line of findstr do it?