中国DOS联盟

文本文档 a.txt 里面有些行是完全相同的,
我想编个批处理把那些多余的相同的去掉,
使得弄完以后所有的都不相同.

怎么办啊, 我试了下没办法, 象下面这样的:

for /f %%i in (a.txt) do echo %%i>>new.txt&set str=%%i&for /f %%j in (a.txt) do if %%j==%str% set %%j=nul

[ Last edited by HAT on 2008-10-30 at 23:23 ]

@echo off
if exist new.txt del new.txt
sort/r<a.txt>temp.txt
setlocal enabledelayedexpansion
set cat=
set dog=
set/a cnt=-1
for /f %%i in (temp.txt) do (
set cat=!dog!
set dog=%%i
set/a cnt+=1
if not "!cat!" equ "" if !dog! neq !cat! (echo !cat! >>new.txt&set/a cnt=0)
)
if !dog! neq !cat! (echo !dog! >>new.txt) else (
echo !cat! >>new.txt)
if exist temp.txt del temp.txt

Originally posted by fuuma at 2008-7-23 04:05 PM:
@echo off
if exist new.txt del new.txt
sort/r<a.txt>temp.txt
setlocal enabledelayedexpansion
set cat=
set dog=
set/a cnt=-1
for /f %%i in (temp.txt) do (
set cat=!dog!
set dog=%%i
s ...

谢了啊 ，哈哈

太复杂啊，可以考虑find命令。

是这个意思吗？
@echo off type nul>b.txt for /f "delims=" %%a in (a.txt) do ( findstr /x /c:"%%a" b.txt 2>nul||echo %%a>>b.txt )

Originally posted by HAT at 2008-9-7 06:08 PM:
是这个意思吗？
@echo off type nul>b.txt for /f "delims=" %%a in (a.txt) do ( findstr /x /c:"%%a" b.txt 2>nul||echo %%a>>b.txt )

真是这样啊！！

能解释下吗，太高深了看不懂

尤其是 。。。 2>nul||echo %%a>>b.txt 。。。

[ Last edited by qinchun36 on 2008-10-30 at 23:16 ]

教程里面有

批处理的教学
http://www.cn-dos.net/forum/viewthread.php?tid=2338

批处理最完整人性化教程
http://www.cn-dos.net/forum/viewthread.php?tid=18482

批处理新手FAQ整理
http://www.cn-dos.net/forum/viewthread.php?tid=34049

中国DOS联盟批处理室经典帖子合集
http://www.cn-dos.net/forum/viewthread.php?tid=31551